Myrons Mopeds

For models with engines 4M, 4MS, and 4M65

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Mobylette Mopeds (Motobecane or Motoconfort)

After World War Two, many airports, rail roads, roads, power plants, pipelines, refineries and factories of Europe were damaged from bombs. So travel was mostly limited to bicycles. A bicycle was light enough to carry across a stream, or over a pile of rocks. But there was a need for long distance mobility, so the motorized bicycle (moped), originally the first motorcycles of the 1890’s-1900’s, was re-born in Europe after WWII. The first Mobylette (little mobility) was the French-made 1949 Motobecane AV3.  

1949-51 AV3   Mobylette
bicycle style tube frame and fork, 600x50B tires (20″ rims)
one speed motor

1951-54 AV31  Mobylette
bicycle style tube frame and fork, 600x50B tires (20″ rims)
one speed motor

1952-54 AV32  Mobylette
bicycle style tube frame and fork, 600x50B tires (20″ rims)
one speed motor

1955-56 AV37   Mobylette Mobymatic Luxe
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
AV35 automatic clutch motor,

1955-56 AV36  Mobylette Mobymatic Standard
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
AV35 automatic clutch motor,

1955-56 AV33  Mobylette Super Standard
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed motor

1955-56 AV32M Mobylette Utilitaire
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed motor

1955-56 AV32S  Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor

1955-56 AV31  Mobylette Luxe
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
one speed motor

 

1956-57 AV79B Mobylette
“70” sheet frame w/tank
telescopic fork, 23 x 2 (19″ rims)
variator motor
early USA model ?

Floyd Clymer would later go on to produce automotive service manuals, familiar to most home mechanics. Here he is before that, when he was editor of Cycle magazine, in Jan 1956 walking his dog with a Mobylette. Mr. Clymer was so impressed with his French freedom, that he wrote this Mobylette Report, to inform American motorcyclists. 

 

1956-57 AU78   Mobylette Superluxe
“70” sheet frame w/tank, telescopic fork, 23 x 2 (19″ rims)
variator motor
1956-57 AU75   Mobylette Monoluxe
“70” sheet frame w/tank, telescopic fork, 23 x 2 (19″ rims)
one speed motor
1957-58 AU47   Mobylette Mobymatic Standard
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
variator motor dual auto clutch (Dimoby)
1957-58 AU34   Mobylette Grand Luxe
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
one speed motor
1957-58 AU54   Mobylette Super Telescopique
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
one speed motor
1957-58 AU33  Mobylette Super Standard
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed motor
1957-58 AU32M Mobylette Utilitaire
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed motor
1957-58 AU32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1957-58 AU51   Mobylette Utilitaire Telescopique
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
one speed motor

 

1959 AV33   Mobylette Super Standard
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed dual auto clutch (Dimoby)
1959 AV54   Mobylette Super Telescopique
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed dual auto clutch (Dimoby)
1959 BG     Mobylette Courroie-Galet
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 Dbg motor, friction drive
1959 AV32M Mobylette Utilitaire
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
one speed motor
1959 AV32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1959 AV51 Mobylette Utilitaire Telescopique
bicycle style tube frame, telescoping fork, 600x50B (20″ rims)
one speed motor

 

1960 AV32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1960 AV32E Mobylette Service Dimoby
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 D motor
1960 BG     Mobylette Courroie-Galet
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 Dbg motor,  friction drive
1960 AV44 Mobylette Standard Telescopique
“early 40″ sheet frame, telescopic fork, 23 x 2 tires (19” rims)
AV7 Dbe motor

 

 

 

1961 AV32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1961 BG43   Mobylette Courroie-Galet
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Dbg motor,  friction drive
1961 BG43T Mobylette Courroie-Galet
sheet frame, rear tank, telescopic fork, 23 x 2 tires (19″ rims)
AV7 Dbg motor,  friction drive
1961 AV43   Mobylette Standard
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor
1961 AV43T Mobylette Standard
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor
1961 AV44   Mobylette Standard Telescopique
sheet frame, rear tank, telescopic fork, 23 x 2 tires (19″ rims)
AV7 Dbe motor
1961 AV44T Mobylette Standard Telescopique
sheet frame, rear tank, telescopic fork, 23 x 2 tires (19″ rims)
AV7 Dbe motor, with leg shield

 

 

1962-65 AU32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1962-63 CG43   Mobylette Courroie-Galet
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Dbg motor, friction drive, with leg shield
1962-63 AU41   Mobylette Utilitaire
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Sb motor
1962-65 AU42   Mobylette Utilitaire Dimoby
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor
1962-63 AU43   Mobylette Standard
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor

1962-65 AU44 Mobylette Standard Telescopique
sheet frame, rear tank, telescopic fork, 22 or 23 (18 or 19″ rims)
AV7 Dbe motor
1962-65 AU48 Mobylette Motomatic Standard
sheet frame, rear tank, telescopic fork, 22 or 23 (18 or 19″ rims)
AV7 Vb motor

1964-65 AV32S Mobylette Service
bicycle style tube frame, bicycle fork, 600x50B tires (20″ rims)
AV7 S motor
1964-65 BG44   Mobylette Courroie-Galet
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Dbg motor, friction drive, with leg shield
1964-67 AV42   Mobylette Utilitaire Dimoby
sheet frame, rear tank, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor

1964-65 AV44   Mobylette Standard Telescopique
sheet frame, rear tank, telescopic fork, 22 or 23 (18 or 19″ rims)
AV7 Dbe motor
1964-65 AV48   Mobylette Motomatic Standard
sheet frame, rear tank, telescopic fork, 22 or 23 (18 or 19″ rims)
AV7 Vb motor
1964-66 AV76   Mobylette Mono Standard
sheet frame with gas tank, telescopic fork, 23 x 2 tires (19″ rims)
AV7 De motor
1965-66 AV79   Mobylette Mobymatic Super
sheet frame with gas tank, telescopic fork, 23 x 2 tires (19″ rims)
AV7 V motor
1964-65 AV65   Mobylette Mono Luxe
sheet frame-tank-storage, telescopic fork, 2.25 – 18 (18″ rims)
AV7 De motor
1965-66 AV68  Mobylette Mobymatic Luxe
sheet frame-tank-storage, telescopic fork, 2.25 – 18 (18″ rims)
AV7 V motor
1964-68 AV85   Mobylette Mono Grand Luxe
sheet frame-tank-storage, telescopic fork, 2.25 – 18 (18″ rims)
AV7 De motor
1964-68 AV88   Mobylette Mobymatic Grand Luxe
sheet frame-tank-storage, telescopic fork, 2.25 – 18 (18″ rims)
AV7 V2 motor
1964-68 AV89   Mobylette Grand Touring
sheet frame-tank-storage, telescopic fork, 2.25 – 18 (18″ rims)
AV7 V2.5 motor, enclosed motor chain
1962-64 Speciale 50, SPR
sheet frame w/storage, TOP TANK, telescopic, 23 x 2 (19″ rims)
AV7 V2.5 motor, enclosed motor chain (SPR)
1965-66 SP50
sheet frame w/storage, TOP TANK, telescopic, 23 x 2 (19″ rims)
AV7 V2.5 motor

 

 

 

 

 

 

1966-68 C1 Cady
Cady sheet frame, bicycle fork, 23 x 2 tires (19″ rims)
one speed dual auto clutch (Dimoby)

1968-70 M1 Cady
Cady sheet frame, bicycle fork, 21 x 2 tires (17″ rims)
one speed dual auto clutch (Dimoby)

1971-73 M3 Cady
Cady sheet frame, bicycle fork, 21 x 2 tires (17″ rims)
one speed dual auto clutch (Dimoby)

1970-71 40   Mobylette
“40” frame, step-thru, bicycle fork, 21 x 2 tires (17″ rims)
1970’s, 1-speed Dimoby, AR2-10-707 carb, 14101 float
1968-70 AU42   Mobylette Utilitaire Dimoby
“early 40” sheet frame, bicycle fork, 23 x 2 tires (19″ rims)
AV7 Db motor
1967-70 AU46  Mobylette Mono Super Standard
“40” frame, step-thru, telescopic fork, 21 x 2 tires (17″ rims)
1970’s, 1-speed Dimoby, AR2-10-707 carb, 14101 float
1968-70 AU49  Mobylette Mobymatic Super Standard
“70” frame, step-thru, telescopic fork, 21 x 2 tires (17″ rims)
1970’s motor, 1-speed Dimoby, AR2-10-707 carb, 14101 float
1968-71 AU85  Mobylette Mono Grand Luxe
“40” frame, step-thru,, telescopic fork, 2.25 – 18 (18″ rims)
1970’s, 1-speed Dimoby, AR2-10-707 carb, 14101 float
(1970’s motor with 60’s head mount, 60’s round exhaust)

1969-71 AU88  Mobylette Mobymatic Grand Luxe
“70” frame, step-thru,, telescopic fork, 2.25 – 18 (18″ rims)
1970’s, variator Dimoby, AR2-12-707 carb, 14101 float
1969-71 AU89  Mobylette Mobymatic Grand Touring
“70” frame, step-thru, telescopic fork, 2.25 – 18 (18″ rims)
1970’s, variator Dimoby, enclosed chain, long seat
1970-71 AU56  Mobylette Mono Super Confort
“50” frame, step-thru, telescopic fork, 2.25 – 17 (17″ rims)
1970’s motor, variator Dimoby, AR2-12-705 carb, 14101 float
1970-71 AU59  Mobylette Mobymatic Super Confort
“50” frame, step-thru, telescopic fork, 2.25 – 17 (17″ rims)
1970’s motor, variator Dimoby, AR2-12-705 carb, 14101 float

 

After 1970, the AV42, 46 and 49 became the 40, 40T and 40V.

After 1970-71, the AV56 and AV59 became the 50S and 50V.

 

 

 

 

 

 

 

 

1971-74 Mobylette 40T, 40L  (was AV46)
“40” frame, step-thru, telescopic fork, 2 – 17 tires (17″ rims)
1970’s motor, 1-speed Dimoby, AR2-12-705 carb, 14101 float
1971-74 Mobylette 40V (was AV49)
“40” frame, step-thru, telescopic fork, 2 – 17 tires (17″ rims)
1970’s motor, variator Dimoby, AR2-12-705 carb, 14101 float 

1971-74 Mobylette 50S, 50L (was AV56)
“50” frame, step-thru, telescopic fork, 2.25 – 17 (17″ rims)
1970’s motor, 1-speed Dimoby, AR2-12-705 carb, 14101 float
1971-74 Mobylette 50V (was AV59)
“50” frame, step-thru, telescopic fork, 2.25 – 17 (17″ rims)
1970’s motor, variator Dimoby, AR2-12-705 carb, 14101 float

1972-73 Mobylette 85
“70” frame, step-thru, telescopic fork, 2.25 – 18 (18″ rims)
1970’s, 1-speed Dimoby, AR2-10-707 carb, 14101 float
(1970’s motor with 60’s head mount, 60’s round exhaust)
1972-73 Mobylette 88
“70” frame, step-thru, telescopic fork, 2.25 – 18 (18″ rims)
1970’s, variator Dimoby, AR2-12-705 carb, 14101 float
(1970’s motor with 60’s head mount, 60’s round exhaust)
11972-74 Mobylette 92
“90” frame, step-thru, telescopic fork, 2.25 – 18 (18″ rims)
“90” motor, variator Dimoby, AR2-13-739, 14101 float
1971-73 Mobylette 93 electronique
“90” frame, TOP TANK, telescopic fork, 2.50 – 17 (17″ rims)
“90” motor, dual variator, AR2-13-726 carb, 14101 float
1971-73 Mobylette 93D electronique 
“90” frame, TOP TANK, telescopic fork, 2.50 – 17 (17″ rims)
“90” motor, dual variator, AR2-13-726 carb, 14101 float
1972-74 Mobylette 94TT electronique
“70” frame, TOP TANK, telescopic fork, 2.50 – 17 (17″ rims)
“90” motor, dual variator, AR2-13-712 carb, 14101 float

 

 

 

 

These are the Motobecane (AV) or Motoconfort (AU) Mobylette engine models and the bike models they came on. US bike models are red. Not included here are the alias brands Wards Riverside, Raleigh, Suvega engines with their models and MB equivalents. 

 approx.  engine  xxx   bike model xxxx Gurtner    comp
xyears     model xxxx models xxxxxxx carburetor  ratio   drive

1949-51 AV3 xxxxxx AV3 Mobylette x   A10-512   6.5  Standard clutchless
1952-56 AV3.5 S xx  AV or AU 31,33     000-516   6.5  Standard clutchless
1952-59 AV7 S xxxx AV or AU 32 xxx   B10–516   6.5  Standard clutchless
1956-59 AV7 Sb xxx AV or AU 41 xxx   B10–516   6.5  Standard clutchless

1952-56 AV3.5  xxx  AV or AU 31,33    0000-516   6.5   single automatic clutch
1957-66 AV7 De xxx AV/AU 85-65-76 BA10-540   7.5  Dimoby dual auto clutch
1966-69 AV7 De xxx AV/AU 85-65-76 BA10-610   7.5  Dimoby dual auto clutch
1965-66 AV7 Db xxx AV or AU 42 xxx BA10-540   6.5  Dimoby dual auto clutch
1966-69 AV7 Db xxx AV or AU 42 xxx BA10-610   6.5  Dimoby dual auto clutch
1960-61 AV7 Dbe X  AV or AU 43,44 xBA10-540   7.5  Dimoby dual auto clutch
1966-68 AV7 Dbe X  AV or AU 43,44 xBA10-610   7.5  Dimoby dual auto clutch
1958-60 AV7 Dbg xx BG or CG 43,44 AR8.7-525   6.5  Dimoby friction drive
1967-70 M1 Isodyne X1,Cady M1,C1 AR110-674   8.0  Dimoby dual auto clutch
1970-72 M1 Isodyne Cady M1,M1PR  AR110-691   8.0  Dimoby dual auto clutch
1973-75 M3 Isodyne Cady M3PR x  AR111.5-753   8.0  Dimoby dual auto clutch
1978-79 AV7 7 xxxx  7, 7 Ranger xx  AR112-884   7.8  Dimoby dual auto clutch
1978-79 AV7 7  xxx  Model 7 30mph AR112–884   7.8  Dimoby dual auto clutch
1978-79 AV7 7?xxx  Model 7 20+25  AR110-919   6.5  Dimoby dual auto clutch
1968-77 AV7 Dc 0xx 40, 50 25+30   AR212-705   7.8  Dimoby dual auto clutch
1974-80 AV7 Dc xxx 40, 50 25+30   AR212-729   7.8  Dimoby dual auto clutch
1974-80 AV7 Dc xxx 40, 50 20mph   AR210-910   6.5  Dimoby dual auto clutch
1978-79 AV10 xxxxx 41TS, 51S, 51T  AD13-976  0.0   Dimoby, case reed valve

1958-59 AV7 V xxxx  AV or AU 68-79  BA10-549   7.5  Variator + dual auto clutch
1959-70 AV7 V2 xxx  AV or AU 88  xx AR13-488   7.5  Variator + dual auto clutch
1968-77 AV7 Vb xxx  AV or AU 48  xx BA10-549   7.5  Variator + dual auto clutch
1966-71 AV7 V2.5 x  AV89, SP50  xx-   H13-569   9.0  Variator + dual auto clutch
1966-68 AV7 V2.5 S  SP50R xxxxxxx    H13-569   9.0  Variator + dual auto clutch
1966-71 AV7 V2.5 B  AV98 xxxxxxxx    H14-626   9.0  Variator + dual auto clutch
1968-71 AV7 Vb  xxx 40V, 50V xxx   AR212–705   7.5  Variator + dual auto clutch
1972-77 AV7 Vb  xxx 40V, 50V xxx   AR212–729   7.5  Variator + dual auto clutch
1974-75 AV7 Vb  xxx 50V 25 & 30    AR212–705   7.5  Variator + dual auto clutch
1976-77 AV7 Vc  xxx 50V 25 & 30    AR212–705   7.8  Variator + dual auto clutch
1977-80 AV7 Vc  xxx 50V 30 mph    AR212–873   7.8  Variator + dual auto clutch
1977-80 AV7 Vc  xxx 50V 25 mph    AR210–737   7.8  Variator + dual auto clutch
1977-77 AV7 Z  xxxx 99Z   xx x xx    AD13–858  0.0   Variator, supercharger piston
1978-79 AV10   xxx   92GT,51V,51SU AD13-976  0.0   Variator, case reed valve
1982-83 AV10   MBK M16, 41V, 51V   AD13-971 -976 -138 Var, case reed valve
1984-98 AV10   MBK 51V, many others AD13-976  0.0 Variator, case reed valve

Sources:
1. AV7 Engines Chart from Mobylette Repair Manual, official, but only goes up to 1969.
2. motobec.fr for their awesome library of sales brochures for each year, and parts manuals
3. Dating Your Motobecane from Ets Mauger for their excellent grid of years and models
4. Motobecane Club of France for illustrations and information
5. mobyjoost on The Mobylette/Motobecane Forum UK, a Mobylette expert and enthusiast
6. La bleue pour les bleus, on Le Monde en Bleue, another Moby expert
7. Mobylette Mopeds – Owners Workshop Manual by Haynes, covers 1965-76 UK models

 

AV3 Motobecane had been making motorcycles since 1922, but after WWII they switched to making motorized bicycles. Europe’s roads were bombed out, gas stations were gone, bridges were gone, so people had to walk or climb across streams and canyons carrying their bicycles and cargo. In 1949 a lightweight moped was born out of the ashes, called Mobylette (little mobility). It’s 50cc two-stroke engine had an aluminum cylinder with a steel sleeve. It had no crank seals. Both transfers were on the right side, and the piston had transfer windows and a ridge across the top. It was not at all symmetrical left to right. That is why the exhaust exits to the left.

 

AV3.5 This also had the early scavenging design (how to get the intake in and exhaust out in one piston stroke, without mixing or wasting any). Both transfer ports were on the right side. Improvements were 1) it had a hard aluminum cylinder with a hard chrome lining, 2) it had crank seals, 3) some models had a new automatic running clutch and automatic starting clutch. It was simply called “embrayage automatique”, not “Dimoby”. But it was the first Dimoby. Once the rear wheel was moving over 5 mph, the automatic starting clutch starts the engine. Once the engine rpms get above about 2000, the automatic running clutch begins to propel the bike forward.

 

AV7 S, AV7 De  The AV7 S and AV7 De (both 1.5 hp) had a improved, completely different scavenging design, known as Schurle Loop. Intake from the crankcase was forced upward around the left and right sides of the piston. Two streams were directed towards the intake side by the left and right transfer ports. They then merged and looped around, past the spark plug, towards the exhaust side, forcing out any exhaust gases. This was more efficient. In the 1950’s all two-stroke engines adopted this design. The piston changed to a flat-dome top, but the cylinder remained all aluminum with hard chrome lined cylinder wall.

The AV7 De exhaust had a new design, called blunderbuss. Inverting the expansion chamber made the exhaust short, allowing the engine to swing, while still allowing the exhaust to expand. The new compact exhaust design allowed a new swinging engine mount design. The AV7 De V-belt was held at a constant tension automatically by a spring, instead of bolted solid and adjusted periodically. 

 

AV7 V The AV7 V (1.5 hp) had a variator, which is a belt drive with one or both pulleys that vary in size. The belt is a V-belt that grips from the sides of the V. It sinks down deeper between the V-shaped sides of the pulley, as they move apart, and raises up higher between the V-shaped sides as they come together. A set of 4 or 6 steel balls roll outward when the engine rpms increase. That forces the pulley sides together, causing the V-belt to ride higher. The result is the engine rpm stays the same as the bike accelerates.

The blunderbuss short exhaust allowed the engine to swing about 20 degrees. Below 15mph the engine is forward, in low gear, and above 25mph it is rearward, in high gear. Amazing!

 

AV7 V2, AV7 Dbe The AV7 V2 (2.0 hp) and AV7 Dbe (1.5 hp) are 95% the same as the preceding AV7 V and Db. Only the crankshaft, crank bearings, and piston changed. The old crank axles were 15mm everywhere, and took standard bearings 6302 (15 x 42 x 13) MB#00518. But installing the press-fit bearings meant dragging the clutch side bearing over the clutch clip groove and needle bearing surface, sometimes getting stuck or causing harm. The new crank was thicker at the bearings, 16mm. The bearings no longer damaged the crank during installation, but were not standard. They were special 6302-QR (16 x 42 x 13 with rounded inner edge) MB#16906. The AV7 V2 illustration does not show the 15-to-16 step in the crankshaft, because it is the older AV7 V illustration, but it does show the new crank and bearing part numbers. 

The piston design did not change. But the piston was offered in many slightly different sizes or “sorts”. The AV7 V parts diagram said 14820 for the piston, but the AV7 V2 said nothing. That is very subtle. There was a separate sheet for pistons with over ten different part numbers and sizes. Because not all of the plated cylinders are made to the exact same diameter, before this you had to sand the piston if it happened to be too tight for that cylinder, or settle for a loose fit like a worn engine has, if it happened to be too loose. 

 

 

AV7 V2.5 This was a late-1960’s 2.5 horsepower version, instead of 2.0 or 1.5 hp. It had noticeably different head fins that run at an angle instead of straight back. Both the cylinder and head fins were wider.

 

 

 

 

M1, M3 These late-60’s and early-70’s moped engines had the Dimoby dual clutch with drive belt, and magneto behind it, both on the left side. They were called Isodyne engines, which roughly means “same side”. Wierd, like Solex!

 

 

 

 

 

AV7 Vb, AV7 Dc These 1970’s models most notable differences are the square shape of the cylinder and head cooling fins (instead of round) and the all-chrome exhaust (instead of painted rear section). Many things became square in the 70’s.

AV7 Vc This was the late-70’s AV7 (2.0 or 1.5 hp) on US-models 50V series.

 

 

 

AV7 Z This 1977-only engine was a unique design. On top it has big fins and a piston-controlled reed valve. So the piston has an intake window. But look under the crankcase and you will see a second cylinder and piston. It pressurizes and depressurizes the crankcase every revolution. It is timed to be lowest pressure during the intake process, and highest during the transfer process. It is a supercharger for a two-stroke engine. But the production did not last long.

 

 

AV10 In 1978 Motobecane came out with an improved and  modernized engine design. Case reed induction is where the carburetor feeds the crankcase through a reed valve, instead of the back of the cylinder and under the moving piston. This changed the back-and-forth flow of piston-port induction to a unidirectional stop-and-go flow. The result was better performance, like 20% more low-rpm torque.

In 1981 Motobecane became bankrupt. For 2 years nothing was produced. Then they were bought by Yamaha, and their name changed to MBK. Production resumed in 1982.

By the mid-80’s pedals were no longer mandatory in most countries. So many of the mid-80’s MBK mopeds have kick-start with foot-pegs instead of pedals

 

 

 

 

Identification

Parts that are different for each version are listed here.
10 versions have 10 quantity columns. The quantity is 
0 if the part is never on that version.
1 if the part is always on that version.
1 if the part is sometimes on that version.

  E N G I N E   V E R S I O N S   
01010 12345 67890   Engines ’74-75 6 volt
52341 00010 00000 engine #4 variator 25 mph
01010 12345 67890   Engines ’76-77 6 volt       
53444 10000 00000 engine #1 Dimoby 20 mph
53949 01000 00000 engine #2 Dimoby 25 mph
53744 00100 00000 engine #3 Dimoby 30 mph
52341 00010 00000 engine #4 variator 25 mph
53745 00001 00000 engine #5 variator 30 mph
01010 12345 67890   Engines ’78-80 12 volt   
54146 00000 10000 engine #6 Dimoby 20 mph
54147 00000 01000 engine #7 Dimoby 25 mph
54149 00000 00100 engine #8 Dimoby 30 mph
54148 00000 00010 engine #9 variator 25 mph
54844 00000 00001 engine #0 variator 30 mph
01010 12345 67890    Cylinders     
22335 00100 00000 cyl. says 581051, FB2 47
23460 00001 01111 cyl. says 682051, most say nothing
53505 10000 10000 cyl. says 681051, TUM207
54328 01010 00000 cyl.   S25682051, TUM207
01010 12345 67890   Exhausts     
21103 11100 00000 exhaust  
22872 11111 11111 exhaust
01010 12345 67890   Intakes   
16673 00010 00010 intake center ∅16 x 10
16619 00001 00000 intake center ∅17 x 12 to 3/77
21201 01100 01100 intake side    ∅19 x 12
22899 00001 00001 intake side    ∅19 x 13? 3/77 on
53496 10000 10000 intake side    ∅19 x 10
01010 12345 67890   Intake Gaskets   
52646 10000 10000 intake gasket round hole
17073 01111 01111 intake gasket rectangle hole
01010 12345 67890   Carburetors 
20026 00001 00000 carb AR2-12-705 center ∅17
22160 01100 00000 carb AR2-12-729 side-5 ∅19
22160 00000 01100 carb AR2-12-729 side-6 ∅19
52175 00010 00000 carb AR2-10-737 center ∅16
52175 00010 00000 carb AR2-10-759 center ∅16
52175 00000 00010 carb AR2-10-991 center ∅16
54115 10000 00000 carb AR2-10-910 side-5 ∅19
54115 00000 10000 carb AR2-10-910 side-6 ∅19
54973 00001 00000 carb AR2-12-873 side-5 ∅19
54973 00000 00001 carb AR2-12-873 side-6 ∅19
54973 00000 00001 carb AR2-12-978 side-6 ∅19
01010 12345 67890 Model 50, 50V Chains
18368 10000 10000 chain   99L+1 for 12 x 48T
17693 01000 01000 chain   96L+1 for 11 x 44T
18427 00100 00100 chain   97L+1 for 13 x 44T
17785 00011 00011 chain 102L+1 for 11 x 54T
01010 12345 67890 Model 40 Chains
18429 10000 10000 chain   93L+1 for 12 x 48T
20766 01000 01000 chain   90L+1 for 11 x 44T
53874 00100 00100 chain   91L+1 for 13 x 44T

 

 

---

Sources

1977 Motobecane America Dealer Manual
’76-’77 40TS, 40TL, 50S, 50L engines 1, 2, 3
’76-’77 50VL 0000, 0000, 00  engines 4, 5
’76-’77 Solex 4600

 

1978 Motobecane America Dealer Manual
’76-’77 40TS, 40TL, 50S, 50L engines 1, 2, 3
’76-’77 50VL 0000, 0000, 00  engines 4, 5
’76-’77 Solex 4600

 

 

1979 Motobecane America Dealer Manual
’78-’80 40T, 50S, 50L, Traveler  engines 6, 7, 8
’78-80 50VL, 50VLA, 50VLS xx  engines 9, 0
’78-80 50VLX, Moby, Le Moped engines 9, 0
’78-80 Model 7, Sebring, Solex 4600

 

 

---

Discussion

Porting: The deepest secret is that there are four different cylinders, all identical on the outside. The different cylinders could have different port widths and heights (duration’s). Much more needs to be learned and explained. Why does a 2 hp one-speed model have a different cylinder than a 2 hp variable speed model?   

Gearing: The drive belt is the same for all versions. The 1-speed front pulley is the same for all versions. The 2-speed front pulley is the same for all versions. The rear pulley (without the front sprocket) is the same for all versions. Therefore, the pulley ratio is the same for all versions. The variator models in “low gear” have the same pulley ratio as the Dimoby models. As the rear wheel speed increases, the variator makes the front pulley bigger. The engine swings back as the front pulley grows, until it is in “high gear”. In high gear the pulley is about 40% bigger. So even though the variator models are geared low (small front and large rear) in chain sprockets, the variator makes up for it, above 18mph, by making the overall gearing about the same. 

 

1974-1981 Motobecane (USA models)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1980 Family Photo: Above are all of the 1980 Motobecane USA models and colors, from the sales brochure. The Sebring is made in Italy and is covered in a separate section, under Italy-made/MB Sebring. The Solex is made in France but covered in a separate section, under France-made/Solex.

Center Stands:  Notice how the center stands on the Moby and Traveler are more vertical than most Motobecane center stands. That is because these photos are of brand new bikes. The center stands become angled more forward with age or heavy use. 

Speed Version is on ID plate: On the frame behind the headlight is the ID plate. The lower squares say model (left) and speed version (right), stamped in. Before 1980, A=30, B=25, C=20. From 1980 on, A=20, B=25, C=30. Before 1978, no letter, just 20, 25, or 30 (mph). Hope yours is a 30! 1980 was the last year for US models. 1981 had new 17 digit VIN and new EPA and DOT noise and safety regulations. That  was “the last straw”. 

Contents:   1. 1982-84 Trac   M56 engine, pedal start Clipper, Eagle, Hawk, Magura controls

Contents:   2. 1984-86 Trac   M56 engine, pedal start Clipper, Eagle, Hawk, Domino controls

Contents:   3. 1986-90 Trac DP50 engine, pedal start Clipper, Olympic, Sprint or Hawk, Blitz

Contents:   4. 1984-90 Trac DM50 engine,   kick start Escot, Liberty, Liberty LS, Image, Metro

 

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1. 1982-84 with M56 engine

 

1982-84 Trac mopeds are made in Korea by Kia Motorcycle Company, Ltd. The engine, made in Korea by Daelim Motor Co. (DMC), is a remake of a 1978-80 Laura M56 engine originally made in Holland and used on Batavus mopeds.

Some of the components are European, and some are Korean. This matters for parts compatibility. The spoke wheels, brakes, speedometer, shocks, forks, fenders and seat are Korean or Asian. European things are CEV (Italian) lights and switches, Bosch (German) magneto, Magura (German) controls, Grimeca (Italian) mag wheels, Encarwi (Dutch) carburetor, and the Laura (Dutch) M56 remake engine and exhaust.

  seat: xx solo xxXx  solo xXxx   solo xxXxx   long  xXxx   long xxXxx   long  xXxx  long
wheels: spoke xXx  mags xXx   spoke xXxx   mags  xXx   spoke xxxx   mags  xXx  spoke

1982   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

1983   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

1984   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

In Trac parts manuals “standard” or “deluxe” refers to the wheels, on Eagle and Hawk.

In Trac parts manuals “I” or “II” refers to the seat, solo or long, on Eagle. Most are Eagle II (long seat).

 

Hawk weight 120 lbs

 

 

 

 

 

 

Eagle weight 100 lbs

in-frame gas tank 1.2 gal

 

 

 

 

 

 

Clipper weight 115 lbs

rear gas tank 1.0 gal

 

 

 

 

 

 

 

All models: Laura M56 engine, Daelim re-make

The original Dutch-made Laura M56 engine was on 1978-80 Batavus Regency and Regency HS. 

 

 

 

 

 

 

 

 

 

 

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2. 1984-1986 with M56 engine

1984-86 Trac mopeds are mostly the same as 1982-84, except for:

1) the controls are 1980’s Domino black, instead of 1970’s Magura silver

2) the cables are different for the Domino controls

3) the switches are integrated instead of separate clamp-on.

4) the wiring is different for the new integrated (built-in) switches

 

 

 

 

 

 

  seat: xx solo xxXx  solo xXxx   solo xxXxx   long  xXxx   long xxXxx   long  xXxx  long
wheels: spoke xXx  mags xXx   spoke xXxx   mags  xXx   spoke xxxx   mags  xXx  spoke

1984   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

1985   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

1986   Clipper   Eagle I dlx   Eagle I std   Eagle II dlx   Eagle II std   Hawk dlx   Hawk std

 

 

 

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3. 1986-1990 with DP50 engine

Since 1984 Trac made the Escot and Image “no-peds” with the Daelim DM50 2-speed automatic engine. It was proven to be good. In 1986 Trac introduced a pedal version Daelim DP50 1-speed automatic for their models Clipper and Hawk. Both DM50 and DP50 had oil injection, where you don’t have to mix oil with the gas. The older M56 engine models needed 50:1 premix oil and gas.

The DP50 engine replaced the 1982-86 Laura M56 Daelim remake engine. During 1986 both engine types were sold, as not all models and colors changed at once. 

In late 1986 or early 1987, the Hawk was renamed Sprint.

 

 

 

 

 

 

 

 

 

 

In 1986 the Olympic, and kick version Liberty, replaced the Eagle. The Olympic was all Korean or Asian made. So most of the parts are different from the other models. The brakes were bigger, and the fork improved, true hydraulic with oil dampening, for a smoother ride.

 

 

 

 

 

 

 

 

 

 

DP50 upgrades: In 1987 two things were improved.

1) The change lever E13-9 was upgraded to a cable-less type. The start cable and start lever below the left handlebar were eliminated.

More on this later …

2) The gear set E7B-3 and E8B-13 was upgraded. Gear E7B-3 has a rounded square center hole. The four engage balls move inward (to disengage the motor for easy pedaling) and outward (to engage the motor) into the four corners of the square hole. These gears crack at one of the corners, when the engage process is not done gently. The upgraded gear set has 3? more teeth on the E7B-3 gear and 3 less on the mate gear E8B-13. More teeth made the E7B-3 gear thicker at the four corners where it was cracking at.

Driveshaft gear E7B-3 changed from #13009 (24T) to #18750 (27T?).

Idleshaft gear E8B-13 changed from #13019 (23T) to #18751 (20T?).

More on this later …

 

 

In 1988 the Blitz came out. It was an Olympic with a solo seat and luggage rack. 

  seat: xx solo xxx  long xx   long  xxx  solo
wheels: spoke xx spoke x    mags  xx spoke

1986   Clipper    Olympic     Hawk

1987   Clipper    Olympic     Sprint

1988   Clipper    Olympic     Sprint  x Blitz

1989   Clipper    Olympic     Sprint  x Blitz

 

 

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4. 1984-1990 with DM50 engine

 

 

 

 

 

 

 

 

 

  seat: xx solo xx  solo xx   long  xxx  solo
wheels: spoke x spoke x    mags  xx spoke

1984 x  Escot  x Liberty xx Image

1985 x  Escot  x Liberty xx Image

1986 x  Escot  x Liberty xx Image x Liberty LS

1987 x  Escot  x Liberty xx Image x Liberty LS

1988 x  Escot  x Liberty xx Image x Liberty LS

1989 x  Escot  x Liberty xx Image  xx Metro

 

 

 

 

 

 

 

 

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1987-1990 Trac DH100

 

 

 

 

 

 

 

 

1954-86 Puch 50-65cc Models

 

From 1954 to 1981 Puch produced the successful MS50 moped and it variants, with a stamped sheet metal frame, telescoping fork front suspension and swinging fork rear suspension. It was a limited-power 50cc fan-cooled two-speed grip-shift. MS stands for Moped Schalenrahmen (sheet frame moped). Most others had welded tube frames. It had rear suspension when most others had hard tails. By 1957 almost 110,000 were made, and in total 1,053,433 MS50 mopeds were produced. 

 

motor  tires  gears  shift  1954 Puch 
M1 p 2.00-19 2-sp hand AT MS50   gray-green

The engine was a 48.8 cc two stroke with 38.0 bore, 6.5:1 compression ratio, 1.8 horsepower, and a two-speed manual hand (cable) shift transmission. It ran on gas and oil mix 25:1 and had 3 liter gas tank. Speed 50 kph (30 mph) on level ground. Weight 88 lbs. Tires 2.00 – 19.

From Wikipedia via Web Translator: Puch began designing the MS 50 in the fall of 1952 and presented the first pre-production model in the summer of 1954. In the autumn of 1954, the MS 50 was launched in grey-green color. The developer was the engineer Walter Kuttler. The rather small bikes were considered innovative compared to other mopeds of the time, such as the NSU Quickly. 

motor  tires  gears  shift 1955 Puch
M1 p 2.25-19 2-sp hand AT MS50   red
M1 p 2.25-19 2-sp hand AT MS50L red, lime, black

From 1955 there was the enlarged tank (4.6 l), reinforced frame, deeper and wider fenders, wider tires 2.25 – 19, wider rims, a reinforced chain and a new chain cover. The MS 50 has now been painted red. 

In the same year, the luxury (Luxus) version MS 50 L was introduced – with chrome-plated rims, nabs and toolbox lids as well as white wall tires. The MS 50 L was available in lime green, red and black.

motor  tires  gears  shift 1956 Puch, Allstate, Bianchi, Tomos
M1 p 2.25-19 2-sp hand AT MS50   red
M1 p 2.25-19 2-sp hand US MS50 Mo-Ped red
M1 p 2.25-19 2-sp hand IT  MS50 Sparviero
M1 p 2.25-19 2-sp hand AT MS50L red, lime, black
M1 k 2.25-19 2-sp hand AT MS50K Kickstart
M1 p 2.25-19 2-sp hand AT VS50
M1 p 2.25-19 2-sp hand SL VS50 Colibri VS50 2.0hp
M1 k 2.25-19 2-sp hand AT VS50K Kickstart
M1 k 2.25-19 2-sp hand SL VS50K Colibri VS50K 2.0
M1 p 2.25-19 2-sp hand AT VS50S  Top tank
M1 p 2.25-19 2-sp hand SL VS50S Colibri VS50S 2.0

motor  tires  gears  shift 1957 Puch, Allstate, Bianchi
M1 p 2.25-19 2-sp hand AT MS50  red
M1 p 2.25-19 2-sp hand US MS50 Mo-Ped red
M1 p 2.25-19 2-sp hand IT  MS50 Sparviero
M1 p 2.25-19 2-sp hand AT MS50L red, lime, black
M1 k 2.25-19 2-sp hand AT MS50K Kickstart
M1 p 2.25-19 2-sp hand AT VS50
M1 k 2.25-19 2-sp hand AT VS50K
M1 p 2.25-19 2-sp hand AT VS50S

motor  tires  gears  shift 1958 Puch, Allstate, Tomos
M1 p 2.25-19 2-sp hand AT MS50  
M1 p 2.25-19 2-sp hand US MS50 Mo-Ped red/white
M1 p 2.25-19 2-sp hand AT MS50L red, lime, black
M1 p 2.25-19 2-sp hand US MS50L Moped Deluxe red
M1 k 2.25-19 2-sp hand AT MS50K Kickstart
M1 p 2.25-19 2-sp hand AT MV50   Reinforced
M2 p 2.25-19 2-sp hand AT VS50
M2 p 2.25-19 2-sp hand SL VS50 Colibri 01  2.0hp
M2 k 2.25-19 2-sp hand AT VS50K
M2 k 2.25-19 2-sp hand SL VS50K Colibri 11  2.0hp
M2 k 2.25-19 2-sp hand SL VS50KL Colibri 12  2.0/2.3
M2 p 2.25-19 2-sp hand AT VS50S

 

1954-81 M-series Engines (on MS50 and variants)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

motor  tires  gears  shift 1959 Puch, Allstate, Tomos
M1 p 2.25-19 2-sp hand AT MS50
M1 p 2.25-19 2-sp hand US MS50 Mo-Ped red/white
M1 p 2.25-19 2-sp hand AT MV50   Reinforced
M2 p 2.25-19 2-sp hand AT VS50
M2 p 2.25-19 2-sp hand SL VS50 Colibri 01  2.0hp 
M2 k 2.25-19 2-sp hand AT VS50K Kick start 
M2 k 2.25-19 2-sp hand SL VS50K Colibri 11  2.0hp
M2 k 2.25-19 2-sp hand SL VS50KL Colibri 12  2.0/2.3
M2 p 2.25-19 2-sp hand AT VS50S Top tank
M2 p 2.25-19 2-sp hand AT VS50L  Zweigang
M2 p 2.25-19 2-sp hand SL VS50L Colibri 02,3,4 2.0hp
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang

 

motor  tires  gears  shift 1960 Puch, Allstate, Tomos
M3 p 2.25-19 2-sp hand AT MS50L
M3 p 2.25-19 2-sp hand AT MS50V
M3 p 2.25-19 2-sp hand US MS50V Mo-ped red/white
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand SL DS50 Colibri Scooter 2.3

 

motor  tires  gears  shift 1961 Puch, Allstate, Tomos
M3 p 2.25-19 2-sp hand AT MS50V 
M3 p 2.25-19 2-sp hand UK MS50V Nomad
M3 p 2.25-19 2-sp hand US MS50V Mo-ped red/white
M3 k 2.25-19 2-sp hand AT MS50VK
M3 k 2.25-19 2-sp foot   AT MS50VKF
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 p 2.25-19 3-sp hand AT VS50D Dreigang
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand UK DS60R Cheetah
M6 k 3.00-12 3-sp hand US DS60 Compact 
M6 k 3.00-12 3-sp hand SL DS50 Colibri Scooter 2.3
M7 k 2.25-19 3-sp foot   AT MC50
M7 k 2.25-19 3-sp foot   US MC50 Sport 60 red/white

motor  tires  gears  shift 1962 Puch, Allstate, Tomos
M3 p 2.25-19 2-sp hand AT MS50V 
M3 p 2.25-19 2-sp hand UK MS50V Nomad
M3 p 2.25-19 2-sp hand US MS50V Mo-ped red/white
M3 k 2.25-19 2-sp hand AT MS50VK
M3 k 2.25-19 2-sp foot   AT MS50VKF 
M6 p 2.25-19 3-sp hand UK MS50VD Nomad
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 p 2.25-19 3-sp hand AT VS50D Dreigang
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand UK DS60R Cheetah
M6 k 3.00-12 3-sp hand US DS60 Compact 
M7 k 2.25-19 3-sp foot   AT MC50
M7 k 2.25-19 3-sp foot   US MC50 Sport 60 red/white

motor  tires  gears  shift 1963 Puch, Allstate, Tomos
M3 p 2.25-19 2-sp hand AT MS50 hard tail
M3 p 2.25-19 2-sp hand US MS50 Econ. Mo-Ped  red/wht
M3 p 2.25-19 2-sp hand AT MS50V 
M3 p 2.25-19 2-sp hand UK MS50V Nomad
M3 p 2.25-19 2-sp hand US MS50V Mo-ped  red/white
M3 k 2.25-19 2-sp hand AT MS50VK 
M3 k 2.25-19 2-sp foot   AT MS50VKF 
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang
M6 p 2.25-19 3-sp hand UK MS50VD Nomad
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand UK DS60R Cheetah
M6 k 3.00-12 3-sp hand US DS60 Compact  red/white
M7 k 2.25-19 3-sp foot   AT MC50
M7 k 2.25-19 3-sp foot   US MC50 Sport 60  red/white

motor  tires  gears  shift 1964 Puch, Allstate, Tomos
M3 p 2.25-19 2-sp hand AT MS50 hard tail
M3 p 2.25-19 2-sp hand US MS50 E. Mo-Ped  red/w, blu/w
M3 p 2.25-19 2-sp hand AT MS50V
M3 p 2.25-19 2-sp hand US MS50V Mo-ped  red/w, blue/w
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang
M6 k 2.25-19 3-sp foot   US MS50VDKF Campus 50  red
M6 k 3.00-12 3-sp hand AT DS50 
M6 k 3.00-12 3-sp hand US DS60 Compact  red/white
M7 k 2.25-19 3-sp foot  AT MC50

motor  tires  gears  shift 1965 Puch, Sears, Tomos
M3 p 2.25-19 2-sp hand AT MS50V 
M3 p 2.25-19 2-sp hand US MS50V Mo-ped blue/white
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang
M6 k 3.00-12 3-sp hand AT R50 Roller (scooter)
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang
M6 k 2.25-19 3-sp foot   US MS50VDKF Campus 50  red
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand US DS60 Compact  red/white
M7 k 2.75-17 3-sp foot   AT VZ50  
M7 k 2.75-17 3-sp foot   US VZ50 Sabre 
M7 k 18f  17r 3-sp foot   AT MC50
M7 k 18f  17r 3-sp foot   UK MC50 Sky Cross  1hp
M7 k 2.25-19 3-sp foot   US MC60 Cheyenne black

After 1965 Sears stopped using the Allstate brand name. 

motor  tires  gears  shift 1966 Puch, Sears, Tomos
M3 p 2.25-19 2-sp hand AT MS50V 
M3  k 2.25-19 2-sp hand AT MS50K
M3 p 2.25-19 2-sp hand AT VS50L  Zweigang 
M3  k 2.25-19 2-sp hand AT VS50K
M6 k 3.00-12 3-sp hand AT R50 Roller (scooter)
M6 p 2.25-19 3-sp hand AT VS50D  Dreigang
M6 k 2.25-19 3-sp foot   US MS50VDKF Campus 50  red
M6 k 3.00-12 3-sp hand AT DS50
M6 k 3.00-12 3-sp hand US DS60 Compact  white
M7 k 2.75-17 3-sp foot   AT VZ50
M7 k 2.75-17 3-sp foot   SE VZ50V3 Dakota green
M7 k 2.75-17 3-sp foot   US VZ50 Sabre 
M7 k 18f  17r 3-sp foot   AT MC50
M7 k 18f  17r 3-sp foot   UK MC50 Sky Cross  1hp
M7 k 2.25-19 3-sp foot   US MC60 Cheyenne black

motor   tires  gears  shift 1967 Puch, Sears, Tomos
M3  p 2.25-19 2-sp hand AT MS50V
M3  k 2.25-19 2-sp hand AT MS50K
M3  p 2.25-19 2-sp hand AT VS50L  Zweigang 
M4b k 2.25-19 2-sp hand AT VS50K no cooling fan
M5  h 3.00-12 2-sp auto  AT R50 Roller (scooter)
M6  p 2.25-19 3-sp hand AT VS50D  Dreigang
M6  k 3.00-12 3-sp hand AT DS50
M8b k 2.75-17 3-sp foot   AT VZ50
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota  red
M8b k 2.75-17 3-sp foot   US VZ50 Sabre
M7  k 18f  17r 3-sp foot   AT MC50

motor   tires  gears  shift 1968 Puch, Tomos
M3r p 2.25-19 2-sp hand DE mofa MS25
M3  p 2.25-19 2-sp hand AT MS50 
M3  k 2.25-19 2-sp hand AT MS50K
M3  p 2.25-19 2-sp hand AT MV50
M3  p 2.25-19 2-sp hand AT VS50L  Zweigang
M4b k 2.25-19 2-sp hand AT VS50K no cooling fan
M5  h 3.00-12 2-sp auto  AT R50 Roller (scooter)
M6  p 2.25-19 3-sp hand UK MS50D  Dreigang
M6  p 2.25-19 3-sp hand AT VS50D  Dreigang
M8b k 2.75-17 3-sp foot   AT VZ50
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota  red
M8  k 18f  17r 3-sp foot   AT MC50

In 1969 the Puch Maxi was born. It had a both a new engine and a new frame design with smaller 17″ tires.

motor   tires  gears  shift 1969 Puch, Tomos
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand AT MS50  
M3  p 2.25-19 2-sp hand AT MV50
M5  p 2.25-19 2-sp auto  AT MS50A  
M5  k 2.25-19 2-sp auto  AT MS50KA
M6  p 2.25-19 3-sp hand UK MS50D  Dreigang
M8  k 2.25-19 2-sp hand AT MS50K  
M8b k 2.75-17 3-sp foot   AT VZ50 no cooling fan
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota  red, blue
M8  k 18f  17r 3-sp foot   AT MC50
H1arp 2.00-17 1-sp auto  DE mofa Maxi N  hard-tail
H1a p 2.00-17 1-sp auto  AT Maxi N  hard-tail

H1a  The horizontal-cylinder one-speed automatic (H1a) engine came out in 1969 on the newborn Maxi. The “a” refers to the top-end version (cylinder, head, intake and carb). The “a” top end had an all-aluminum “lo-torque” 7-side-fin cylinder. Later “b” top end had a steel-sleeved “hi-torque” 8-side-fin cylinder. “c” had a steel-sleeved 9-fin cylinder. Each of these can have different horsepower versions. 

E50  All 1970’s Puch horizontal one-speed automatic engines H1a, H1b, H1c, had the same H1 bottom-end, which has “E50” on the case. E50 is a German abbreviation for Eingang 50 (one speed 50). E50 is only the case, and does not specify the top end. So here we are using our own abbreviated engine names, because Puch never had any, instead spelling out the words.

motor   tires  gears  shift 1970 Puch, Tomos, Avello 
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand AT MS50
M3  p 2.25-19 2-sp hand AT MV50
M3  p 2.25-19 2-sp hand UK MS50V black
M5  k 2.25-19 2-sp auto  AT MS50KA
M6  p 2.25-19 3-sp hand UK MS50D green/white
M8  k 2.25-19 2-sp hand AT MS50K
M8b k 2.75-17 3-sp foot   AT VZ50 no cooling fan
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota
M7  k 18f  17r 3-sp foot   AT MC50
H1arp 2.00-17 1-sp auto  DE mofa Maxi N  hard-tail
H1a p 2.00-17 1-sp auto  AT Maxi N  = DK Maxi-1P
H1a p 2.00-17 1-sp auto  AT Maxi S  = DK Maxi-1PL

motor   tires  gears  shift 1971 Puch, Tomos, Avello 
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand AT MS50
M3  p 2.25-19 2-sp hand AT MV50
M6  p 2.25-19 3-sp hand UK MS50D VS w/MS fender
M8  k 2.25-19 2-sp hand AT MS50K
M8b k 2.75-17 3-sp foot   AT VZ50  no cooling fan
M7  k 18f  17r 3-sp foot   AT MC50
H1arp 2.00-17 1-sp auto  DE mofa Maxi N  hard-tail
H1a p 2.00-17 1-sp auto  DE Maxi N   = DK Maxi-1P
H1a k 2.00-17 1-sp auto  DE Maxi K   = DK Maxi-1K
H1a p 2.00-17 1-sp auto  DE Maxi S 
H1a k 2.00-17 1-sp auto  DE Maxi SK = DK Maxi-1KL

motor   tires  gears  shift 1972 Puch, Tomos, Avello 
M3r p 2.25-19 2-sp hand DE mofa MS25
M3  p 2.25-19 2-sp hand AT MS50 
M3  p 2.25-19 2-sp hand AT MV50
M6  p 2.25-19 3-sp hand UK MS50D
M8  k 2.25-19 2-sp hand AT MS50K
M8b k 2.75-17 3-sp foot   AT VZ50
M8b k 2.75-17 3-sp foot   UK VZ50 yellow 4hp
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
M7  k 18f  17r 3-sp foot   AT MC50
H1a p 2.00-17 1-sp auto  DE Maxi N   = DK Maxi-1P
H1a k 2.00-17 1-sp auto  DE Maxi NK = DK Maxi-1K
H1a p 2.00-17 1-sp auto  DE Maxi S
H1a k 2.00-17 1-sp auto  DE Maxi SK = DK Maxi-1KL

motor   tires  gears  shift 1973 Puch, Tomos, Avello 
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand AT MS50V
M3  p 2.25-19 2-sp hand UK MV50
M3  p 2.25-19 2-sp hand UK MS50 
M6  p 2.25-19 3-sp hand UK MS50D
M6  p 2.25-19 3-sp hand UK VS50D
M8  k 2.25-19 2-sp hand AT MS50K
M9b k 2.75-17 3-sp foot   UK VZ50
M9b k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
M7  k 18f  17r 3-sp foot   AT MC50
H1a p 2.00-17 1-sp auto  AT Maxi N   = DK Maxi-1P  
H1a p 2.00-17 1-sp auto  US Maxi N
H1a k 2.00-17 1-sp auto  AT Maxi NK = DK Maxi-1K 
H1a p 2.00-17 1-sp auto  AT Maxi S 
H1a p 2.00-17 1-sp auto  UK Maxi S
H1a p 2.00-17 1-sp auto  US Maxi S
H1a k 2.00-17 1-sp auto  AT Maxi SK = DK Maxi-1KL
N50S 17f  17r 4-sp foot   UK M50 S 2.6 hp

motor   tires  gears  shift 1974 Puch 
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand DE MS50V 
M7  k 18f  17r 3-sp foot   AT MC50
M8  k 2.25-19 2-sp hand AT MS50K
M9b k 2.75-17 3-sp foot   UK VZ50
M9b k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
H1arp 2.00-17 1-sp auto  DE mofa Maxi N
H1a p 2.00-17 1-sp auto  DE Maxi N   = DK Maxi-1P  
H1a p 2.00-17 1-sp auto  US Maxi N 1.5hp
H1a k 2.00-17 1-sp auto  AT Maxi NK = DK Maxi-1K 
H1a p 2.00-17 1-sp auto  DE Maxi S
H1a p 2.00-17 1-sp auto  CA Maxi S Maxi S Custom
H1b p 2.00-17 1-sp auto  CA Maxi S Maxi S Deluxe
H1a p 2.00-17 1-sp auto  US Maxi S 1.5hp
H1a k 2.00-17 1-sp auto  AT Maxi SK = DK Maxi-1KL
N50S 17f  17r 4-sp foot   UK M50 S 2.6 hp
N50S 17f  17r 4-sp foot   DE M50 S M50 Racing 

motor   tires  gears  shift 1975 Puch 
M3r p 2.25-19 2-sp hand DE mofa MS25
M3  p 2.25-19 2-sp hand DE MS50V
M7  k 18f  17r 3-sp foot   AT MC50
M8  k 2.50-17 3-sp foot   SE Dakota 3000  Monza tank
M9  k 2.25-19 2-sp hand AT MS50K no cooling fan
M9b k 2.75-17 3-sp foot   UK VZ50
M9b k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
H1a p 2.00-17 1-sp auto  DE Maxi N
H1a p 2.00-17 1-sp auto  US Maxi N 1.5hp
H1a k 2.00-17 1-sp auto  AT Maxi K
H1a p 2.00-17 1-sp auto  DE Maxi S
H1a p 2.00-17 1-sp auto  CA Maxi S Custom
H1b p 2.00-17 1-sp auto  CA Maxi S Deluxe
H1a p 2.00-17 1-sp auto  US Maxi S 1.5hp
H2a k 2.00-17 2-sp auto  DE Maxi 2K
H2a k 2.00-17 2-sp auto  DE mofa Maxi 2-25
N50S 17f  17r 4-sp foot   DE M50 S M50 Racing
N50S 18f  17r 4-sp foot   AT Monza 4S 
N50S 17f  17r 4-sp foot   AT Monza 4SL
N50S 18f  17r 4-sp foot   UK Monza 4S Gran Prix Special
N50-6 17f  17r 6-sp foot   DE M50 6S M50 Jet

H2a  The horizontal-cylinder two-speed automatic engine type “a” (H2a) came out in 1975 in Europe, and 1978 in the US. The first year or two had a lo-torque all-aluminum 7-side-fin cylinder type “a”.

ZA50  All 1970’s Puch horizontal two-speed automatic engines H2a, H2b, H2c, had the same H2 bottom-end, which has “ZA50” on the case. ZA50 is a German abbreviation for Zwiegang Automatik 50 (two speed automatic 50). ZA50 is only the case, and does not specify the top end. So here we are using our own abbreviated engine names, because Puch never had any, instead spelling out the words “one speed automatic” or “two speed automatic”. 

motor  tires  gears  shift 1976 Puch 
M3r p 2.25-19 2-sp hand DE mofa MS25
M3  p 2.25-19 2-sp hand AT MS50V
M3r p 2.25-19 2-sp hand DE MS25
M9  k 2.25-19 2-sp hand AT MS50K no cooling fan
M7  k 18f  17r 3-sp foot   AT MC50
M8b k 2.75-17 3-sp foot   AT VZ50
M8b k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
M8  k 2.50-17 3-sp foot   SE Dakota 3000  Monza tank
H1a p 2.00-17 1-sp auto  DE Maxi N   = DK Maxi-1P
H1a p 2.00-17 1-sp auto  US Maxi N  1.0, 1.5, 2.0 hp
H1a k 2.00-17 1-sp auto  AT Maxi NK = DK Maxi-1K
H1a p 2.00-17 1-sp auto  FR Maxi S
H1a p 2.00-17 1-sp auto  US Maxi S  1.0, 1.5, 2.0 hp
H1a p 2.00-17 1-sp auto  US Maxi L Nostalgic 1.0 1.5 2.0
H1a k 2.00-17 1-sp auto  AT Maxi SK = DK Maxi-1KL
H2a k 2.00-17 2-sp auto  DE Maxi 2K
H2a k 2.00-17 2-sp auto  DE mofa Maxi 2-25
N50S 17f  17r 4-sp foot   FR Monza 4S 
N50S 17f  17r 4-sp foot   FR Monza 4SL

H2b  After about 1977 the horizontal-cylinder two-speed automatic H2 had a hi-torque steel-sleeved aluminum 8-side-fin cylinder type “b”.

motor   tires  gears  shift 1977 Puch 
M3r p 2.25-19 2-sp hand DE mofa MS25 
M3  p 2.25-19 2-sp hand AT MS50V 
M8b k 2.75-17 3-sp foot   AT VZ50
M8  k 2.75-17 3-sp foot   SE VZ50V3 Dakota gold, blue
M8  k 2.50-17 3-sp foot   SE Dakota 3000  Monza tank
M9  k 2.25-19 2-sp hand AT MS50K 
H1a p 2.00-17 1-sp auto  AT Maxi N
H1a p 2.00-17 1-sp auto  US Maxi N Rigid  1.0, 1.5, 2.0 hp
H1a k 2.00-17 1-sp auto  AT Maxi NK 
H1a p 2.00-17 1-sp auto  FR Maxi S
H1a p 2.00-17 1-sp auto  US Maxi S Maxi  1.0, 1.5, 2.0 hp
H1a p 2.00-17 1-sp auto  DE Maxi S-Sport
H1a p 2.25-17 1-sp auto  US Maxi S-Sport Maxi Sport 1 1.5 2
H1a k 2.25-17 1-sp auto  AT Maxi SK
H1a p 2.00-17 1-sp auto  US Maxi L Newport 1.0 1.5 2.0
H1a p 18f  17r 1-sp auto  FR X-30 
N50S 18f  17r 4-sp foot   FR Monza 4S 
N50S 17f  17r 4-sp foot   FR Monza 4SL
N50-6 17f  17r 6-sp foot   AT Monza 6SL

motor   tires  gears  shift 1978 Puch, Sears 
M9  k 2.25-19 2-sp hand AT MS50K 
H1a p 2.00-17 1-sp auto  AT Maxi N
H1a p 2.00-17 1-sp auto  US Maxi N GN  1.0, 1.5, 2.0 hp
H1a k 2.25-17 1-sp auto  AT Maxi SK
H1a p 2.25-17 1-sp auto  FR Maxi S
H1a p 2.25-17 1-sp auto  US Maxi S Maxi  1.0, 1.5, 2.0 hp
H1a p 18f  17r 1-sp auto  FR X-30
H1a p 2.00-17 1-sp auto  US Free Spirit blu 8080 (1.0 hp)
H1a p 2.00-17 1-sp auto  US Free Spirit red 8081 8082 8083
H1a p 2.25-17 1-sp auto  US Free Spirit silv 8084 8085 8086
H1b p 2.25-17 1-sp auto  AT Maxi L
H1b p 2.25-17 1-sp auto  US Maxi L Maxi Luxe 1.0 1.5 2.0
H1b p 2.25-17 1-sp auto  AT Maxi S-Sport
H1b p 2.25-17 1-sp auto  US Maxi S-Sport Sport  1.0 1.5 2.0
H2b p 2.25-17 2-sp auto  US Maxi SL Sport MkII  1.5, 2.0
H1b p 2.25-17 1-sp auto  US Maxi L Newport 1.0 1.5 2.0
H1c p 2.50-17 1-sp auto  US Monza Magnum XK 1.5, 2.0
H2c p 2.50-17 2-sp auto  US Monza Magnum MkII 1.5 2.0
N50S 18f  17r 4-sp foot   FR Monza 4S 
N50S 17f  17r 4-sp foot   FR Monza 4SL
N50-6 17f  17r 6-sp foot   AT Monza 6SL

motor   tires  gears  shift 1979 Puch 
M9  k 2.25-19 2-sp hand AT MS50K
H1a k 2.25-17 1-sp auto  AT Maxi SK
H1a p 2.25-17 1-sp auto  AT Maxi S
H1a p 2.25-17 1-sp auto  US Maxi S Maxi  1.0, 1.5, 2.0 hp
H1a p 18f  17r 1-sp auto  FR X-30 
H1b p 2.25-17 1-sp auto  AT Maxi S
H1b p 2.25-17 1-sp auto  UK Maxi Super
H1b p 2.25-17 1-sp auto  AT Maxi L
H1b p 2.25-17 1-sp auto  US Maxi L Maxi Luxe 1.0 1.5 2.0
H1b p 2.25-17 1-sp auto  AT Maxi S-Sport
H1b p 2.25-17 1-sp auto  US Maxi S-Sport Sport  1.0 1.5 2.0
H2b p 2.25-17 2-sp auto  US Maxi SL Sport MkII  1.5, 2.0
H1b p 2.25-17 1-sp auto  US Maxi L Newport 1.0 1.5 2.0
H1c p 2.50-17 1-sp auto  US Monza Magnum XK 1.5, 2.0
H2c p 2.50-17 2-sp auto  US Monza Magnum MkII 1.5 2.0
N50S 17f  17r 4-sp foot   FR Monza 4SL
N50-6 17f  17r 6-sp foot   AT Monza 6SL

motor   tires  gears  shift 1980 Puch 
M9  k 2.25-19 2-sp hand AT MS50K 
H1a p 2.25-17 1-sp auto  SE Maxi Nostalgie

 

 

 

 

 

motor   tires  gears  shift 1981 Puch 
M9  k 2.25-19 2-sp hand AT MS50K
E1b p 2.25-17 1-sp auto  DE Maxi N

 

 

 

motor   tires  gears  shift 1982 Puch 
E1b p 2.25-17 1-sp auto  DE Maxi N

 

 

 

motor   tires  gears  shift 1983 Puch
E1b p 2.25-17 1-sp auto  DE Maxi N

 

 

motor   tires  gears  shift 1984 Puch 
E1b p 2.25-17 1-sp auto  DE Maxi N 

 

 

 

motor   tires  gears  shift 1985 Puch
E1b p 2.25-17 1-sp auto  DE Maxi N

 

 

 

 

 

 

 

motor   tires  gears  shift 1986 Puch
E1b p 2.25-17 1-sp auto  DE mofa Maxi N  
E1b p 2.25-17 1-sp auto  DE mofa Maxi N DGR
E1b p 2.25-17 1-sp auto  DE mofa Maxi S
E2b p 2.25-17 2-sp auto  DE mofa Maxi S2 
N50-3 2.25-17 3-sp hand DE mofa N50 Racing 25

 

 

 

 

 

 

 

 

 

 

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Sources: facykler.dk has all Denmark MS50 models, engines info and parts
Sources: searsallstateriders.com has all Sears models, data and some parts
Sources: classic-motorbikes.net has photos and data for all UK models
Sources: Erik’s Puch Cross Info has all Puch-Avello Spanish models
Sources: Zgodba o mopedu: 45 let proizvodrije mopedov v Kopru, by Boris Brovinsky, 2000
Sources: The story of the (Tomos) moped: 45 years of moped production in Koper

 

 

 

 

Horsepower versions: There were three horsepower (speed) versionson ’75 to ’86 US-model Puch mopeds, 1.0 hp (20 mph), 1.5 hp (25 mph) and 2.0 hp (30 mph). Each US state had a different speed and power limit. A sticker on each side cover said the power (speed) version, but nowhere else did. Without that, the power version can be determined by inspection or measurement of each part and matching that to the specs in the chart below. The carburetor ID number is the easiest and most useful way to find the power version in the chart.

Top End Versions: There were four different top end versions, 7-fin on ’75-85 Maxi, 8-fin on ’78-86 Maxi Hi-Torque, 9-fin on ’78-82 Magnum, and 10-fin on ’83-86 Austro Daimler (Maxi Plus) and Dart.

1975-86 Models and Model Codes: Here the Puch models that share the same speed version parts are grouped together and given codes. 18 parts catalogs cover the 12 year range of US-model Puch mopeds and re-brands. 16 of 18 are shown. Not included are pre-1975 US-model Puch mopeds and motorcycles sold by Sears. Also not included are Puch remakes made after 1987 in Italy, Slovakia and Turkey.  

1978-82 Sears, JC Penney and Murray partnered with Puch to produce their own brands. Sears and JC Penney are made in Austria by Kromag. Murray is made in USA by Murray. The parts manuals do not have Puch part numbers and all Puch branding is removed from the actual bikes and parts, because they want to keep the true identity secret. Three lines of evidence allow the Puch part number translations. 1) The Puch Series B parts manual has the same illustrations and text format as Sears and Murray parts manuals. 2) Actual carburetors, intakes and exhausts from Sears Free Spirit, JC Penney or Murray show the identity agrees with Puch Series B. 3) Specifications for gaskets and intakes from Sears or Murray show the identity agrees with Puch Series B.  For other parts the translation from Sears, JC Penney or Murray part numbers to Puch part numbers is guessed, based on agreement with Puch Series B. 

 

SHEET FRAME MODELS
code   catalog   power   colors: 7-fin, 8-fin, 9-fin, 10-fin

75    Jul 76 1.0-2.0 ’75-76 Maxi-N, Maxi-S, Nostalgic

76    Oct 761.0-2.0 ’76-77 Rigid, Maxi, Maxi Sport, Newport

78    Mar 781.0-2.0 ’78 GN, Maxi
78r  Mar 781.0 hp  ’78 Maxi Luxe, Sport, Newport
78t   Mar 781.0 hp  ’78 Sport MkII
78L  Mar 781.5-2.0 ’78 Maxi Luxe, Sport, Newport
78T  Mar 781.5-2.0 ’78 Sport MkII

79    Jan 791.0-2.0 ’79 GN, Maxi
79r   Jan 791.0 hp  ‘79 Maxi Luxe, Sport, Newport L
79t   Jan 791.0 hp  ‘79 Sport MkII, Maxi II
79L Jan 79 1.5-2.0 ’79 Maxi Luxe, Sport, Newport L
79T Jan 79 1.5-2.0 ’79 Sport MkII
79T Jan 79 1.5-2.0 ’78-79 Maxi II

80    Jan 801.0-2.0 ’80-83 Maxi
80r   Jan 801.0 hp  ’80-83 Maxi Luxe
80t   Jan 801.0 hp  ’80-83 Sport MkII, Newport II
80L  Jan 801.5-2.0 ’80-83 Maxi Luxe
80T  Jan 801.5-2.0 ’80-83 Sport MkII, Newport II

84    Jan 841.0-2.0 ’84-85 Maxi to 7736972
84s  Jan 841.5-2.0 ’84-85 Maxi Sport LS to 2421596
84r   Jan 841.0 hp  ’84-84 Maxi Luxe
84t   Jan 841.0 hp  ’84-84 Sport MkII, Newport II
84L  Jan 841.5-2.0 ’84-84 Maxi Luxe
84T  Jan 841.5-2.0 ’84-84 Sport MkII, Newport II

84A  Jan 841.5-2.0 ’84-86 Austro Daimler (Maxi Plus) I
85T  Jan 851.5-2.0 ’84-86 Austro Daimler (Maxi Plus) II

85    Jan 851.5-2.0 ’85-86 Maxi from 7736973
85r   Jan 851.0 hp  ’85-85 Maxi Luxe
85t   Jan 851.0 hp  ’85-85 Sport MkII, Newport II
85L  Jan 851.5-2.0 ’85-85 Maxi Luxe
85T  Jan 851.5-2.0 ’85-85 Sport MkII, Newport II
86L  Jan 841.5-2.0 ’85-86 Maxi Sport LS from 2421597
86T  Jan 851.5-2.0 ’85-86 Maxi Sport LS II

 

TUBE FRAME MODELS
code   catalog   power   colors: 7-fin, 8-fin, 9-fin, 10-fin

78j    Jan 781.0-2.0 ’78-79 JC Penney Pinto, Swinger

78s   Jan 781.0-2.0 ’78 Sears Free Spirit

78K   Jul 781.0-2.0 ’78 Magnum XK
78M  Jul 781.0-2.0 ’78 Magnum MkII

79K  Aug 791.0-2.0 ’79 Magnum XK
79M Aug 791.0-2.0 ’79 Magnum MkII

80M Jan 801.0-2.0 ’80-82 Magnum MkII
80M Jan 801.0-2.0 ’80-81 Magnum II

80m  Jan 801.5 ’79-82 Murray 8315, 8415, 8515
80m  Jan 802.0 ’79-82 Murray 8320, 8420, 8520

81    Apr 811.5-2.0 ’80-82 Series B

81M Feb 811.0-2.0 ’81-82 Magnum LTD

83D  Jan 831.5-2.0 ’83-84 Dart

85C  Jan 861.5-2.0 ’85-86 Cobra
86C  Jan 861.5-2.0 ’85-86 Cobra II

 

 

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1975-86 Puch Speed Versions

10 things are different for 1.0, 1.5 or 2.0 hp versions.

1. Head: some might have more chamber volume
2. Head gasket: some are thicker, for lower compression
3. Piston: some are longer, restricting intake
4. Cylinder: some have restrictor plugs
5. Base gasket: some are thinner, for less port duration
6. Carburetor: some are smaller
7. Air filter: some have restrictor plugs
8. Intake pipe: some are smaller or restricted
9. Exhaust pipe: some have less holes inside
10. Sprockets: some are geared lower

 

How to upgrade to 2.0 hp specification:

This procedure is only for bikes where all of the parts are original.

1. Indentify the year and model of the bike. The year is on the ID plate. Here they are shown and explained. 

2. Look up your bike’s parts catalog and model code in the list above.

3. Then for each part in the list below, look at the color of the Puch part number for that model code. Green means the part is the same as on 2.0 hp versions. Black means it is not the same as on 2.0hp versions.

4. Change all of the parts with black part numbers to green specification, either by replacement or modification.

5. Unfortunately not all of the part specifications are known.

 

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1. Head

000.001.1111 color code years power  HEAD
349.410.0011 silver 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.410.0011 silver 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.410.0011 silver 78   ’78-78 1.0 GN, Maxi
349.410.0011 silver 79   ’79-79 1.0 GN, Maxi
349.410.0011 silver 80   ’80-83 1.0 Maxi
349.410.0011 silver 84   ‘84-85 1.0 Maxi
349.210.2011 black 78r  ‘78-78 1.0 Maxi Luxe, Newport
349.210.2011 black 78t  ‘78-78 1.0 Sport MkII
349.210.2011 black 79r  ‘79-79 1.0 Maxi Luxe, Newport L
349.210.2011 black 79t  ‘79-79 1.0 Sport MkII, Maxi II
349.210.2011 black 80r  ‘80-83 1.0 Maxi Luxe
349.410.0011 silver 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.410.0011 silver 76   ’76-77 1.5-2.0 Rigid, Maxi, Maxi Sport, Newport
349.410.0011 silver 78   ’78-78 1.5-2.0 GN, Maxi
349.410.0011 silver 78s    ’78-78 1.5-2.0 Sears Free Spirit
349.410.0011 silver 78j    ’78-79 1.5-2.0 JC Penney Pinto, Swinger
349.410.0011 silver 79   ’79-79 1.5-2.0 GN, Maxi
349.410.0011 silver 80   ’80-83 1.5-2.0 Maxi
349.410.0011 silver 81   ‘80-82 1.5-2.0 Series B
325.110.0011 silver 84   ‘84-84 1.5-2.0 Maxi
325.110.0011 silver 84s  ‘84-84 1.5-2.0 Maxi Sport LS to 2421596
349.310.4011 black 78L ’78-78 1.5-2.0 Maxi Luxe, Sport, Newport
349.310.4011 black 78T ’78-78 1.5-2.0 Sport MkII
349.310.4011 black 79L ’79-79 1.5-2.0 Maxi Luxe, Sport, Newport L
349.310.4011 black 79T ’79-79 1.5-2.0 Sport MkII
349.310.4011 black 79T ’78-79 1.5-2.0 Maxi II
349.310.4011 black 80L ’80-83 1.5-2.0 Maxi Luxe
349.310.4011 black 80T ’80-83 1.5-2.0 Sport MkII, Newport II
349.810.4011 black 84L ’84-85 1.5-2.0 Maxi Luxe
349.810.4011 black 84T ’84-85 1.5-2.0 Sport MkII, Newport II
349.710.4011 silver 85C ’85-86 1.5 Cobra
349.710.4011 silver 86C ’85-86 1.5 Cobra II
349.110.4011 silver 86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597
349.110.4011 silver 85   ’85-86 1.5-2.0 Maxi
349.110.4011 silver 86T ’85-86 1.5-2.0 Maxi Sport LS II 
349.110.4011 silver 85C ’85-86 2.0 Cobra
349.110.4011 silver 86C ’85-86 2.0 Cobra II
328.410.4011 black 78K  ’78-78 1.0-1.5-2.0 Magnum XK
328.410.4011 black 78M ’78-78 1.0-1.5-2.0 Magnum MkII
328.410.4011 black 79K  ’79-79 1.0-1.5-2.0 Magnum XK
328.410.4011 black 79M ’79-79 1.0-1.5-2.0 Magnum MkII
328.410.4011 black 80M ’80-82 1.0-1.5-2.0 Magnum MkII
328.710.4011 black 80M ’80-81 1.0-1.5-2.0 Magnum II
345.110.1011 silver 84A ’84-86 1.5 Austro-Daimler (Maxi Plus)
345.110.1011 silver 84T ’84-86 1.5 Austro-Daimler (Maxi Plus) II
345.110.0011 silver 84A ’84-86 2.0 Austro-Daimler (Maxi Plus)
345.110.0011 silver 84T ’84-86 2.0 Austro-Daimler (Maxi Plus) II

 

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2. Head Gasket

000.000.000 mm code years power  HEAD GASKET
349.110 none 0.0 78L ’78-78 1.5-2.0 Maxi Luxe, Sport, Newport
349.110 none 0.0 78T ’78-78 1.5-2.0 Sport MkII
349.110 none 0.0 79L ’79-79 2.0 Maxi Luxe, Sport, Newport L
349.110 none 0.0 79T ’79-79 2.0 Sport MkII
349.110 none 0.0 79T ’78-79 2.0 Maxi II
349.110 none 0.0 80T ’80-83 2.0 Sport MkII, Newport II
349.110.0041 0.4 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.110.0041 0.4 76   ’75-76 1.0 Rigid, Maxi, Maxi Sport, Newport
349.110.0041 0.4 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.110.0041 0.4 76   ’76-77 1.5-2.0 Rigid, Maxi, Maxi Sport, Newport
349.110.0041 0.4 78   ’78-78 1.5-2.0 GN, Maxi
349.110.0041 0.4 78t  ’78-78 1.0 Sport MkII
349.110.0041 0.4 79   ’79-79 1.5-2.0 GN, Maxi
349.110.0041 0.4 79t  ’79-79 1.0 Sport MkII
349.110.0041 0.4 80   ’80-83 1.5-2.0 Maxi
349.110.0041 0.4 81   ’80-82 1.5-2.0 Series B
349.110.0041 0.4 84   ’84-84 1.5-2.0 Maxi
349.110.0041 0.4 84s  ’84-84 1.5-2.0 Maxi Sport LS to 2421596
349.110.0041 0.4 85   ’85-86 2.0 Maxi
349.110.0041 0.4 85C ’85-86 2.0 Cobra
349.110.0041 0.4 86T ’85-86 2.0 Maxi Sport LS II
349.110.0041 0.4 86C ’85-86 2.0 Cobra II
349.110.0041 0.4 78K  ’78-78 1.0-2.0 Magnum XK
349.110.0041 0.4 78M ’78-78 1.0 & 2.0 Magnum MkII
349.110.0041 0.4 79K  ’79-79 1.0-2.0 Magnum XK
349.110.0041 0.4 79M ’79-79 1.0 & 2.0 Magnum MkII
349.110.0041 0.4 80M ’80-82 1.0 & 2.0 Magnum MkII
349.110.0041 0.4 80M ’80-82 1.0 & 2.0 Magnum II
349.110.0041 0.4 81M ’81-82 1.0 & 2.0 Magnum LTD
349.110.0041 0.4 83D ’83-84 2.0 Dart
349.110.0041 0.4 84A ’84-85 2.0 Austro Daimler (Maxi Plus)
349.110.0041 0.4 84T ’84-85 2.0 Austro Daimler (Maxi Plus) II
349.310.0041 0.8 85C ’85-86 1.5 Cobra
349.310.0041 0.8 86C ’85-86 1.5 Cobra II
349.310.0041 0.8 83D ’83-84 1.5 Dart
349.310.0041 0.8 84A ’84-85 1.5 Austro Daimler (Maxi Plus)
349.310.0041 0.8 84T ’84-85 1.5 Austro Daimler (Maxi Plus) II
328.110.8041 1.5 78r  ’78-78 1.0 Maxi Luxe, Newport
328.110.8041 1.5 78t  ’78-78 1.0 Sport MkII
328.110.8041 1.5 79r  ’79-79 1.0 Maxi Luxe, Newport L
328.110.8041 1.5 79t  ’79-79 1.0 Sport MkII, Maxi II
328.110.8041 1.5 80r  ’80-83 1.0 Maxi Luxe
328.110.8041 1.5 84   ’84-84 1.0 Maxi
328.110.8041 1.5 84r ’84-85 1.0 Maxi Luxe
328.110.8041 1.5 84   ’84-84 1.0 Maxi
328.110.8041 1.5 85   ’85-86 1.5 Maxi
328.110.8041 1.5 86L ’85-86 1.5 Maxi Sport LS from 2421597
328.110.8041 1.5 78L ’78-78 1.5 Maxi Luxe, Sport, Newport L
328.110.8041 1.5 78T ’78-78 1.5 Sport MkII
328.110.8041 1.5 79L ’79-79 1.5 Maxi Luxe, Sport, Newport L
328.110.8041 1.5 79T ’79-79 1.5 Sport MkII
328.110.8041 1.5 79T ’78-79 1.5 Maxi II
328.110.8041 1.5 80T ’80-83 1.5 Sport MkII, Newport II
328.110.8041 1.5 78M’78-78 1.5 Magnum MkII
328.110.8041 1.5 79M’79-79 1.5 Magnum MkII
328.110.8041 1.5 80M’80-82 1.5 Magnum MkII
328.110.8041 1.5 80M’80-82 1.5 Magnum II
328.110.8041 1.5 81M’81-82 1.5 Magnum LTD

None of these cylinders need a head gasket. New 8-fin ’78-83 2.0 hp models did not come with head gaskets. Remove the head gasket to upgrade to 2.0 hp specification. That provides a slight increase in compression ratio by reducing the combustion chamber volume.

 

---

3. Piston

000.00.1111  lower oil  
000.0.11   rings  holes code years power  PISTON
349.110.0060 C 26  2 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic,
349.110.0060 C 26  2 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.110.0069 C 26  4 78   ’78-781.0 GN, Maxi
349.110.0069 C 26  4 78r  ’78-781.0 Maxi Luxe, Sport, Newport
349.110.0069 C 26  4 78t  ’78-781.0 Sport MkII
349.110.0069 C 26  4 78s  ’78-781.0 Sears Free Spirit
349.110.0069 C 26  4 79   ’79-791.0 GN, Maxi
349.110.0069 C 26  4 79r  ’79-791.0 Maxi Luxe, Sport, Newport
349.110.0069 C 26  4 79t ’79-791.0 Sport MkII, Maxi II
349.110.0069 C 26  4 80   ’80-83 1.0 Maxi
349.110.0069 C 26  4 80r  ’80-83 1.0 Maxi Luxe
349.110.0069 C 26  4 80t  ’80-83 1.0 Sport MkII, Newport II
349.110.1060 C 21  2 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.110.1060 C 21  2 76   ’76-77 1.5-2.0 Rigid, Maxi, Maxi Sport, Newport
349.110.1069 C 21  4 78   ’78-781.5-2.0 GN, Maxi
349.110.1069 C 21  4 78s  ’78-781.5-2.0 Sears Free Spirit
349.110.1069 C 21  4 79   ’79-791.5-2.0 GN, Maxi
349.110.1069 C 21  4 80   ’80-83 1.5-2.0 Maxi
349.110.1069 C 21  4 81   ’80-82 1.5-2.0 Series B
349.110.1069 C 21  4 84   ’84-84 1.5-2.0 Maxi
349.110.1069 C 21  4 84s  ’84-84 1.5-2.0 Maxi Sport LS to 2421596
350.310.0069 C 23  ? 78L ’78-78 1.5-2.0 Maxi Luxe, Sport, Newport
350.310.0069 C 23  ? 78T ’78-78 1.5-2.0 Sport MkII
349.210.5069 L  23  ? 79L ’79-79 1.5-2.0 Maxi Luxe, Sport, Newport L
350.310.0069 C 23  ? 79T ’79-79 1.5-2.0 Sport MkII
350.310.0069 C 23  ? 79T ’78-79 1.5-2.0 Maxi II
349.210.5069 L  23  ? 80L ’80-83 1.5-2.0 Maxi Luxe
349.210.5069 L  23  ? 80T ’80-83 1.5-2.0 Sport MkII, Newport II
350.310.0069 C 23  ? 78K  ’78-78 1.0-1.5-2.0 Magnum XK
350.310.0069 C 23  ? 78M ’78-78 1.0-1.5-2.0 Magnum MkII
350.310.0069 C 23  ? 79K  ’79-79 1.0-1.5-2.0 Magnum XK
350.310.0069 C 23  ? 79M ’79-79 1.0-1.5-2.0 Magnum MkII
350.310.0069 C 23  ? 80M ’80-83 1.0-1.5-2.0 Magnum II
350.310.0069 C 23  ? 80M ’80-83 1.0-1.5-2.0 Magnum MkII
350.310.0069 C 23  ? 81M ’81-82 1.0-1.5-2.0 Magnum LTD
345.110.0069 1 23  4 85   ’85-86 1.5-2.0 Maxi
345.110.0069 1 23  4 85C ’85-86 1.5-2.0 Cobra
345.110.0069 1 23  4 86C ’85-86 1.5-2.0 Cobra II
345.110.0069 1 23  4 86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597
345.110.0069 1 23  4 86T ’85-86 1.5-2.0 Maxi Sport LS II
345.110.0069 1 23  4 84A ’84-85 1.5-2.0 Austro-Daimler (Maxi Plus)
345.110.0069 1 23  4 84T ’84-85 1.5-2.0 Austro-Daimler (Maxi Plus) II

1.0 hp pistons for 7-fin cylinders have a 5 mm longer skirt (lower). That causes the intake port to open later and close sooner (less duration). Also some of the port is still blocked by the piston even at maximum opening (less area). It’s a simple matter to file or grind 5 mm off of the intake side piston skirt, to make it 21 mm from the bottom edge of the pin, the same as 2.0 hp specification. 8-fin and 10-fin cylinders never had 1.0 hp versions. 1.0 hp pistons for 9-fin cylinders are the same as 1.5 and 2.0 hp.

Rings:
C means two common type rings
L means upper L ring, lower common
1 means one common ring only

 

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4. Cylinder

000.001.1111 color code years power  CYLINDER with piston
349.810.0050 silver 00   restricted intake port
349.810.0050 silver 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.810.0050 silver 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.810.0050 silver 78   ’78-78 1.0 GN, Maxi
349.810.0050 silver 79   ’79-79 1.0 GN, Maxi
349.810.0050 silver 80   ’80-83 1.0 Maxi
349.810.0050 silver 84   ’84-85 1.0 Maxi to 7736972
349.310.0050 black 000 restricted intake port
349.310.0050 black 78r  ’78-78 1.0 Maxi Luxe, Sport, Newport
349.310.0050 black 78t  ’78-78 1.0 Sport MkII
349.310.2050 black 00    restricted intake port
349.310.2050 black 79r  ’79-79 1.0 Maxi Luxe, Sport, Newport
349.310.2050 black 79t  ’79-79 1.0 Sport MkII
349.310.2050 black 80r  ’80-83 1.0 Maxi Luxe
349.310.2050 black 80t  ’80-83 1.0 Sport MkII, Newport II
349.310.2050 black 84r  ’84-84 1.0 Maxi Luxe
349.310.2050 black 84t  ’84-84 1.0 Sport MkII, Newport II
349.310.2050 black 85r  ’85-85 1.0 Maxi Luxe
349.310.2050 black 85t  ’85-85 1.0 Sport MkII, Newport II
349.110.0050 silver 00   not restricted
349.110.0050 silver 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.110.0050 silver 76   ’76-77 1.5-2.0 Rigid, Maxi, Maxi Sport, Newport
349.110.0050 silver 78   ’78-78 1.5-2.0 GN, Maxi
349.110.0050 silver 78s  ’78-78 1.5-2.0 Sears Free Spirit
349.110.0050 silver 78j  ’78-79 1.5-2.0 JC Penney Pinto, Swinger
349.110.0050 silver 79   ’79-79 1.5-2.0 GN, Maxi
349.110.0050 silver 80   ’80-83 1.5-2.0 Maxi
349.110.0050 silver 80m’80-82 1.5-2.0 Murray 83xx, 84xx, 85xx
349.110.0050 silver 81   ’80-82 1.5-2.0 Series B
349.110.0050 silver 84   ’84-85 1.5-2.0 Maxi to 7736972
349.110.0050 silver 84s  ’84-85 1.5-2.0 Maxi Sport LS to 2421596
349.310.4050 black 00   not restricted
349.310.4050 black 78L ’78-78 1.5-2.0 Maxi Luxe, Sport, Newport
349.310.4050 black 78T ’78-78 1.5-2.0 Sport MkII
349.610.4050 black 000 replaces 349.310.4050
349.610.4050 black 79L ’79-79 1.5-2.0 Maxi Luxe, Sport, Newport L
349.610.4050 black 79T ’79-79 1.5-2.0 Sport MkII
349.610.4050 black 79T ’79-79 1.5-2.0 Maxi II
349.610.4050 black 80L ’80-83 1.5-2.0 Maxi Luxe
349.610.4050 black 80T ’80-83 1.5-2.0 Sport MkII, Newport II
349.610.4050 black 84L ’84-84 1.5-2.0 Maxi Luxe
349.610.4050 black 84T ’84-84 1.5-2.0 Sport MkII, Newport II
349.210.6050 silver 000 replaces 349.310.4050 and 349.610.4050
349.210.6050 silver 84L ’84-84 1.5-2.0 Maxi Luxe
349.210.6050 silver 84T ’84-84 1.5-2.0 Sport MkII, Newport II
349.210.6050 silver 85L ’85-85 1.5-2.0 Maxi Luxe
349.210.6050 silver 85T ’85-85 1.5-2.0 Sport MkII, Newport II
349.110.6050 silver 85   ’85-86 1.5-2.0 Maxi from 7736973
349.110.6050 silver 85C ’85-86 1.5-2.0 Cobra to 1505807
349.110.6050 silver 86C ’85-86 1.5-2.0 Cobra II to 1505807
349.110.6050 silver 86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597
349.110.6050 silver 86T ’85-86 1.5-2.0 Maxi Sport LS II
349.610.6050 silver 85C ’85-86 1.5-2.0 Cobra from 1505808
349.610.6050 silver 86C ’85-86 1.5-2.0 Cobra II from 1505808
328.710.4050 black 78K ’78-78 1.0-2.0 Magnum XK
328.710.4050 black 79K ’79-79 1.0-2.0 Magnum XK
328.310.2050 black 78M’78-78 1.0-2.0 Magnum MkII
328.310.2050 black 79M’79-79 1.0-2.0 Magnum MkII
328.310.2050 black 80M’80-82 1.0-2.0 Magnum MkII
328.910.2050 black 80M’80-82 1.0-2.0 Magnum II
334.110.0050 black 84A ’84-86 1.5-2.0 Austro Daimler (Maxi Plus)
334.110.0050 black 85T ’84-86 1.5-2.0 Austro Daimler (Maxi Plus) II

 

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5. Base Gasket

000.001.1111 mm code years power  BASE GASKET .
349.310.0131 0.5 all   ’75-86 1.0 all 7-fin models
349.310.0131 0.5 all   ’78-86 1.0 all 8-fin models
349.110.0131 1.0 all   ’75-86 1.5-2.0 all 7-fin models
349.110.0131 1.0 all   ’78-86 1.5-2.0 all 8-fin models
328.210.5131 0.3 all   ’78-82 1.0-1.5-2.0 all 9-fin models
328.310.0131 0.5 83D ’83-84 1.5-2.0 Dart
328.310.0131 0.5 84A ’84-86 1.5-2.0 Austro Daimler (Maxi Plus)
328.110.0131 1.0 84T ’84-86 1.5-2.0 Austro Daimler (Maxi Plus) II

 

---

6. Carburetor

000.000.0000    mm 00 jet code  years  power  CARB 14 mm
349.415.5000 1/14/152 64 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
???.???.????    1/14/157 ??  78j  ’78-79 2.0 JC Penney Swinger
349.815.5000 1/14/160 64 76   ’76-77 2.0 Rigid, Maxi, Maxi Sport, Newport
349.815.5000 1/14/160 64 78   ’78-78 2.0 GN, Maxi
349.815.5000 1/14/160 64 79   ’79-79 2.0 GN, Maxi to 7705425
???.???.????    1/14/163 68 78s  ’78-78 2.0 Sears Free Spirit
349.115.6000 1/14/???  68 81   ’80-82 2.0 Series B
???.???.????    1/14/164 52 78s  ’78-78 1.0-1.5 Sears Free Spirit
349.915.5000 1/14/???  52 81   ’80-82 1.5 Series B
???.???.????    1/14/166 62 80m ’80-81 2.0 Murray 83xx, 84xx, 85xx
349.815.6000 1/14/185 64 80   ’79-83 2.0 Maxi from 7705426
349.815.6000 1/14/185 64 84   ’84-84 2.0 Maxi
349.815.6000 1/14/185 64 84s  ’84-84 2.0 Maxi Sport LS to 2421596
349.315.6500 1/14/203 70 86C ’85-86 1.5 Cobra II
349.515.5500 1/14/196 68 85C ’85-86 1.5-2.0 Cobra
349.515.5500 1/14/196 68 86C ’85-86 2.0 Cobra II

000.000.0000    mm 00 jet code  years  power  CARB 12 mm
???.???.????    1/12/279 00 000 modern remake
349.215.4000 1/12/292 54 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.215.4000 1/12/292 54 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.215.4000 1/12/292 54 78r  ’78-78 1.0 Maxi Luxe, Sport, Newport
349.315.4000 1/12/293 60 76   ’76-77 1.5 Rigid, Maxi, Maxi Sport, Newport
349.315.4000 1/12/293 60 78   ’78-78 1.5 GN, Maxi
349.315.4000 1/12/293 60 79   ’79-79 1.5 GN, Maxi to 7705250
349.315.4000 1/12/293 60 78L ’78-78 2.0 Maxi Luxe, Sport, Newport
349.415.4000 1/12/294 54 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.415.4000 1/12/294 54 78r  ’78-78 1.0 Maxi Luxe, Sport, Newport
349.415.4000 1/12/294 54 79r  ’79-79 1.0 Maxi Luxe, Sport, Newport L
349.415.4000 1/12/294 54 80   ’80-83 1.0 Maxi
349.415.4000 1/12/294 54 80r  ’80-83 1.0 Maxi Luxe
349.415.4000 1/12/294 54 84   ’84-84 1.0 Maxi
349.715.7000 1/12/297A 5080M’80-82 1.0 Magnum MkII
349.715.7000 1/12/297A 5080M’80-82 1.0 Magnum II
349.715.7000 1/12/297A 5081M’81-82 1.0 Magnum LTD
???.???.????    1/12/299 00 000  unknown
349.815.4000 1/12/300 48 78t  ’78-78 1.0 Sport MkII
349.815.4000 1/12/300 48 79t  ’79-79 1.0 Sport MkII, Maxi II
349.815.4000 1/12/300 48 80t  ’80-83 1.0 Sport MkII, Newport II
???.???.????    1/12/302 50 78j  ’78-79 1.0 JC Penney Swinger
349.115.7000 1/12/304 66 78L ’78-78 1.5 Maxi Luxe, Sport, Newport
349.215.7000 1/12/307 58 78T ’78-78 2.0 Sport MkII
349.215.7000 1/12/307 58 80   ’80-83 1.5 Maxi from 7705251
349.215.7000 1/12/307 58 84   ’84-84 1.5 Maxi
349.215.7000 1/12/307 58 84s  ’84-84 1.5 Maxi Sport LS to 2421596
349.215.7000 1/12/307 58 86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597
349.215.7000 1/12/307 58 80L ’80-83 2.0 Maxi Luxe
349.215.7000 1/12/307 58 85   ’85-86 1.5-2.0 Maxi
349.615.7000 1/12/309 48 80L ’80-83 1.5 Maxi Luxe
349.615.7000 1/12/309 48 80M’80-82 1.5 Magnum MkII
349.615.7000 1/12/309 48 80M’80-82 1.5 Magnum II
349.615.7000 1/12/309 48 81M’81-82 1.5 Magnum LTD
349.615.7000 1/12/310 48 79L ’79-79 1.5 Maxi Luxe, Sport, Newport L
349.315.8000 1/12/314 56 79T ’79-79 2.0 Sport MkII, Maxi II
349.315.8000 1/12/314 56 80T ’80-83 2.0 Sport MkII, Newport II
349.315.8000 1/12/314 56 86T ’85-86 1.5-2.0 Maxi Sport LS II
349.415.8000 1/12/316 64 78K ’78-78 2.0 Magnum XK
349.415.8000 1/12/316 64 79K ’79-79 2.0 Magnum XK
349.515.8000 1/12/317 50 78K ’78-78 1.5 Magnum XK
349.515.8000 1/12/317 50 79K ’79-79 1.5 Magnum XK
349.615.8000 1/12/318 50 78K ’78-78 1.0 Magnum XK
349.615.8000 1/12/318 50 79K ’79-79 1.0 Magnum XK
349.615.8000 1/12/318 50 78M’78-78 1.0 Magnum MkII
349.615.8000 1/12/318 50 79M’79-79 1.0 Magnum MkII
349.815.7000 1/12/321 50 79T ’79-79 1.5 Sport MkII
349.815.7000 1/12/321 50 79T ’78-79 1.5 Maxi II
349.815.7000 1/12/321 50 78j  ’78-79 1.5 JC Penney Pinto, Swinger
349.815.7000 1/12/321 50 80T ’80-83 1.5 Sport MkII, Newport II
349.715.8000 1/12/322 60 78M’78-78 2.0 Magnum MkII
349.715.8000 1/12/322 60 79M’79-79 2.0 Magnum MkII
349.715.8000 1/12/322 60 80M’80-82 2.0 Magnum MkII
349.715.8000 1/12/322 60 80M’80-82 2.0 Magnum II
349.715.8000 1/12/322 60 81M’81-82 2.0 Magnum LTD
349.815.8000 1/12/323 48 78M’78-78 1.5 Magnum MkII
349.815.8000 1/12/323 48 79M’79-79 1.5 Magnum MkII
???.???.????    1/12/339 52 83D ’83-84 1.5 Dart
???.???.????    1/12/340 54 83D ’83-84 2.0 Dart
345.315.6000 18.12.106 52 84A ’84-86 1.5 Austro Daimler (Maxi Plus)
345.315.6000 18.12.106 52 84T ’84-86 1.5 Austro Daimler (Maxi Plus) II
345.415.6000 18.12.107 54 84A ’84-86 2.0 Austro Daimler (Maxi Plus)
345.415.6000 18.12.107 54 84T ’84-86 2.0 Austro Daimler (Maxi Plus) II

Identification: Use this list to identify the bike model and speed version from knowing the year and carburetor ID number. 

Jet Size: Intake air restrictors located in the air filter box, before the carburetor, cause the jet size to be much smaller. Intake air restrictors located in the intake port or intake pipe, after the carburetor, cause the jet size to be the same or only slightly smaller. Besides the intake pipe and air filter box, other things that affect the jet size on a piston-port two-stroke engine are piston, cylinder, exhaust, and to a lesser degree, head and gaskets.  

 

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7. Air Filter

000.001.1111 fig code years  power  AIR FILTER for sheet frame
349.315.0700 20 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.315.0700 20 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.315.0700 20 78   ’78-78 1.0-1.5 GN, Maxi
349.315.0700 20 79   ’79-79 1.0-1.5 GN, Maxi
349.315.0700 20 80   ’80-83 1.0-1.5 Maxi
349.315.0700 20 78r  ’78-78 1.0-1.5 Maxi Luxe, Sport, Newport
349.315.0700 20 78t  ’78-78 1.0-1.5 Sport MkII
349.315.0700 20 79r  ’79-79 1.0-1.5 Maxi Luxe, Sport, Newport L
349.315.0700 20 79t  ’79-79 1.0-1.5 Sport MkII, Maxi II
349.315.0700 20 80r  ’80-83 1.0-1.5 Maxi Luxe
349.315.0700 20 78L ’78-78 1.5 Maxi Luxe, Sport, Newport
349.315.0700 20 78T ’78-78 1.5 Sport MkII
349.315.0700 20 79L ’79-79 1.5 Maxi Luxe, Sport, Newport L
349.315.0700 20 79T ’79-79 1.5 Sport MkII
349.315.0700 20 80L ’80-83 1.5 Maxi Luxe
349.315.0700 20 80T ’80-83 1.5 Sport MkII, Newport II
349.315.0700 20 84   ’84-84 1.0-1.5 Maxi
349.315.0700 20 84s  ’84-84 1.0-1.5 Maxi Sport LS to 2421596
349.315.0700 20 84L ’84-85 1.5 Maxi Luxe
349.315.0700 20 84T ’84-85 1.5 Sport MkII, Newport II
349.315.0700 20 86L ’85-86 1.5 Maxi Sport LS from 2421597
349.315.0700 20 86T ’85-86 1.5 Maxi Sport LS II
349.115.0700 10 75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.115.0700 10 76   ’76-77 1.5-2.0 Rigid, Maxi, Maxi Sport, Newport
349.115.0700 10 78   ’78-78 2.0 GN, Maxi
349.115.0700 10 79   ’79-79 2.0 GN, Maxi
349.115.0700 10 80   ’80-83 2.0 Maxi
349.115.0700 10 78L ’78-78 2.0 Maxi Luxe, Sport, Newport
349.115.0700 10 78T ’78-78 2.0 Sport MkII
349.115.0700 10 79L ’79-79 2.0 Maxi Luxe, Sport, Newport L
349.115.0700 10 79T ’79-79 2.0 Sport MkII
349.115.0700 10 80L ’80-83 2.0 Maxi Luxe
349.115.0700 10 80T ’80-83 2.0 Sport MkII, Newport II
349.115.0700 10 84   ’84-84 2.0 Maxi
349.115.0700 10 84s  ’84-84 2.0 Maxi Sport LS to 2421596
349.115.0700 10 84L ’84-85 2.0 Maxi Luxe
349.115.0700 10 84T ’84-85 2.0 Sport MkII, Newport II
349.115.0700 10 85S ’85-86 2.0 Maxi Sport LS from 2421597
349.115.0700 10 86T ’85-86 2.0 Maxi Sport LS II
345.115.5161 00 84A ’84-86 1.5-2.0 Austro Daimler (Maxi Plus)
345.115.5161 00 84T ’84-86 1.5-2.0 Austro Daimler (Maxi Plus) II

000.001.1111 fig code years  power   AIR FILTER for tube frame
321.215.2700 40 78K ’78-78 1.0-1.5 Magnum XK
321.215.2700 40 78M’78-78 1.0-1.5 Magnum MkII
321.215.2700 40 79K ’79-79 1.0-1.5 Magnum XK
321.215.2700 40 79M’79-79 1.0-1.5 Magnum MkII
321.215.2700 40 80M’80-82 1.0-1.5 Magnum MkII
321.215.2700 40 80M’80-82 1.0-1.5 Magnum II
321.215.2700 40 81M’81-82 1.0-1.5 Magnum LTD
321.215.2700 40 81   ’80-82 1.5 Series B
321.115.2700 30 78K ’78-78 2.0 Magnum XK
321.115.2700 30 78M’78-78 2.0 Magnum MkII
321.115.2700 30 79K ’79-79 2.0 Magnum XK
321.115.2700 30 79M’79-79 2.0 Magnum MkII
321.115.2700 30 80M’80-82 2.0 Magnum MkII
321.115.2700 30 80M’80-82 2.0 Magnum II
321.115.2700 30 81M’81-82 2.0 Magnum LTD
321.415.2700 50 81   ’80-82 2.0 Series B
321.415.2700 50 85C ’85-86 1.5-2.0 Cobra
321.415.2700 50 86C ’85-86 1.5-2.0 Cobra II

 

Restrictors: Intake air silencer/filter assemblies #20 and #40, for 1.0 or 1.5 hp versions, contain restrictor plugs #4 and #44. Remove the pressed in plugs to convert the air box to 2.0 hp version. This must be done along with the 2.0 hp carburetor changes which include a bigger jet.

 

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8. Intake Pipe

000.001.11 base carb code years  power  INTAKE PIPE 1-speed 
349.215.1301 12  12  75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.215.1301 12  12  76   ’76-77 1.0-1.5 Rigid, Maxi, Maxi Sport, Newport
349.215.1301 12  12  78   ’78-78 1.0-1.5 GN, Maxi
349.215.1301 12  12  000 ’78-78 1.0 and 2.0 Maxi Luxe, Sport
349.215.1301 12  12  78K ’78-78 1.0 and 2.0 Magnum XK
349.215.1301 12  12  79K ’79-79 1.0 and 2.0 Magnum XK
349.115.1301 Sq  14  75   ’75-76 1.5-2.0 Maxi-N, Maxi-S, Nostalgic
349.115.1301 Sq  14  76   ’76-77 2.0 Rigid, Maxi, Maxi Sport, Newport
349.115.1301 Sq  14  78   ’78-78 2.0 GN, Maxi  349.114.1301 = 3135
349.115.1301 Sq  14  78s  ’78-78 2.0 Sears Free Spirit
349.115.1301 Sq  14  78j   ’78-79 2.0 JC Penney Pinto, Swinger
349.115.1301 Sq  14  80m’79-82 2.0 Murray 8320, 8420, 8421, 8520
349.115.1301 Sq  14  81   ’80-82 1.5-2.0 Series B
3135, 3206 0  Sq  8.5 78s  ’78-78 1.5 Sears Free Spirit
3135, 3206 0  Sq  8.5 78j   ’78-79 1.5 JC Penney Pinto, Swinger
3135, 3206 0  Sq  8.5 80m’79-82 1.5 Murray 8315, 8415, 8416, 8515
3135, 3205 0  Sq  6.7 78s  ’78-78 1.0 Sears Free Spirit
3135, 3205 0  Sq  6.7 78j   ’78-79 1.0 JC Penney Pinto, Swinger
349.415.1301 12 9 12 000 ’78-78 1.5 Maxi Luxe, Sport
349.415.1301 12 9 12 78K ’78-78 1.5 Magnum XK
349.415.1301 12 9 12 79K ’79-79 1.5 Magnum XK
349.215.3301 12  12  79   ’79-79 1.0-1.5 GN, Maxi replaces 349.215.1301
349.215.3301 12  12  79r  ’79-79 1.0 Maxi Luxe, Sport, Newport L
349.215.3301 12  12  79L ’79-79 1.5 Maxi Luxe, Sport, Newport L
349.215.3301 12  12  80   ’80-83 1.0-1.5 Maxi
349.215.3301 12  12  84   ’84-85 1.0-1.5 Maxi
349.215.3301 12  12  84r  ’84-84 1.0 Maxi Luxe
349.215.3301 12  12  84L ’84-84 1.5 Maxi Luxe
349.215.3301 12  12  85   ’85-86 1.5 Maxi
349.215.3301 12  12  85r  ’85-85 1.0 Maxi Luxe
349.215.3301 12  12  85L ’85-85 1.5 Maxi Luxe
349.115.3301 14  14  79   ’79-79 2.0 GN, Maxi replaces 349.115.1301
349.115.3301 14  14  79L ’79-79 2.0 Maxi Luxe, Sport, Newport L
349.115.1301 14  14  80   ’80-83 2.0 Maxi
349.115.1301 14  14  80L ’80-83 2.0 Maxi Luxe
349.115.1301 14  14  84   ’84-85 2.0 Maxi
349.115.1301 14  14  84s  ’84-85 1.5-2.0 Maxi Sport LS to 2421596
349.115.1301 14  14  84L ’84-84 2.0 Maxi Luxe
349.115.1301 14  14  85   ’85-86 2.0 Maxi
349.115.1301 14  14  85L ’85-84 2.0 Maxi Luxe
349.115.1301 14  14  85C ’85-86 1.5-2.0 Cobra
349.115.1301 14  14  86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597

 

000.001.11 base carb code years  power  INTAKE PIPE 2-speed
321.615.6301 12  8.5 78T ’78-78 1.5 Sport MkII
321.415.6301 12  12  78t  ’78-78 1.0 Sport MkII
321.415.6301 12  12  78T ’78-78 2.0 Sport MkII
321.415.6301 12  12  79t  ’79-79 1.0 Sport MkII, Maxi II
321.415.6301 12  12  79T ’79-79 1.5 Sport MkII
321.415.6301 12  12  79T ’79-79 1.5 Maxi II
321.415.6301 12  12  80t  ’80-83 1.0 Sport MkII, Newport II
321.415.6301 12  12  80T ’80-83 1.5 Sport MkII, Newport II
321.415.6301 12  12  80M’80-81 1.0-2.0 Magnum II
321.415.6301 12  12  84t  ’84-84 1.0 Sport MkII, Newport II
321.415.6301 12  12  84T ’84-84 1.5 Sport MkII, Newport II
321.315.6301 14  14  79T ’79-79 2.0 Sport MkII, Maxi II
321.315.6301 14  14  80T ’80-83 2.0 Sport MkII, Newport II
321.315.6301 14  14  84T ’84-84 2.0 Sport MkII, Newport II
321.315.6301 14  14  86T ’85-86 1.5-2.0 Sport LS II
321.315.6301 14  14  86C ’85-86 1.5-2.0 Cobra II

000.001.11 base carb code years  power  INTAKE 1-sp oil injection
349.215.4032 14  14  000 ’78-78 1.0 and 2.0 Newport (oil inj)
349.315.4032 12  12  000 ’78-78 1.5 Newport (oil injection)

000.001.11 base carb code years  power  INTAKE 2-sp oil injection
349.815.6302 12  12  78M’78-78 1.0-2.0 Magnum MkII (oil inj)
349.815.6302 12  12  79M’79-79 1.0-2.0 Magnum MkII (oil inj)
349.815.6302 12  12  80M’80-82 1.0-2.0 Magnum MkII (oil inj)

Two-speed intake pipes are noticeably taller and slightly longer than 1-speed intakes, because the 2-speed engine case places the cylinder lower and slightly forward. The difference in intake dimensions equals the difference in cylinder position, because the carburetor is in the same position relative to the frame.

Oil injection intake pipes have a oil hose spigot.

 

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9. Exhaust Pipe

EXHAUST FRONT PIPE left side 1-speed ∅26 seal ring
000.001.1111 ∅P H code years  power  H is # of holes, grey is unsure
349.416.0012 18 1 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
349.416.0012 18 1 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.416.0012 18 1 78   ’78-78 1.0 GN, Maxi
349.416.0012 18 1 78r  ’78-78 1.0 Maxi Luxe, Sport, Newport
349.416.0012 18 1 79   ’79-79 1.0 GN, Maxi
349.416.0012 18 1 79r  ’79-79 1.0 Maxi Luxe, Sport, Newport L
349.416.0012 18 1 80   ’80-83 1.0 Maxi
349.416.0012 18 1 80r  ’80-83 1.0 Maxi Luxe
349.416.0012 18 1 84   ’84-84 1.0 Maxi
349.416.0012 18 1 84r  ’84-84 1.0 Maxi Luxe
349.416.0012 18 1 85r  ’85-85 1.0 Maxi Luxe
349.116.8012 22 2 75   ’75-76 1.5 Maxi-N, Maxi-S, Nostalgic
349.116.8012 22 1 76   ’76-77 1.5 Rigid, Maxi, Maxi Sport, Newport
349.116.8012 22 1 78   ’78-78 1.5 GN, Maxi
349.116.8012 22 1 79   ’79-79 1.5 GN, Maxi
349.116.8012 22 1 80   ’80-83 1.5 Maxi
349.116.8012 22 1 84   ’84-84 1.5 Maxi
349.616.0012 22 4 75   ’75-76 2.0 Maxi-N, Maxi-S, Nostalgic
349.616.0012 22 4 76   ’76-77 2.0 Rigid, Maxi, Maxi Sport, Newport
349.616.0012 22 4 78   ’78-78 2.0 GN, Maxi
349.616.0012 22 4 78L ’78-78 2.0 Maxi Luxe, Sport, Newport
349.616.0012 22 4 79   ’79-79 2.0 GN, Maxi
349.616.0012 22 4 79L ’79-79 2.0 Maxi Luxe, Sport, Newport L
349.616.0012 22 4 80   ’80-83 2.0 Maxi
349.616.0012 22 4 80L ’80-83 2.0 Maxi Luxe
349.616.0012 22 4 84   ’84-84 2.0 Maxi
349.616.0012 22 4 84L ’84-85 2.0 Maxi Luxe
349.916.0012 22 2 78L ’78-78 1.5 Maxi Luxe, Sport, Newport
349.816.0012 22 2 79L ’79-79 1.5 Maxi Luxe, Sport, Newport L
349.816.8012 22 1 80L ’80-83 1.5 Maxi Luxe
349.816.8012 22 1 84L ’84-84 1.5 Maxi Luxe
349.816.8012 22 1 85L ’85-85 1.5 Maxi Luxe
111.000.3049 22 0 78s  ’78-78 1.0 Sears Free Spirit
111.000.3049 22 0 78j  ’78-79 1.0 JC Penney Pinto, Swinger
111.000.3091 22 2 78s  ’78-78 1.5-2.0 Sears Free Spirit
111.000.3091 22 4 78j  ’78-79 1.5-2.0 JC Penney Pinto, Swinger
111.000.3091 22 4 80m’80-81 1.5-2.0 Murray 83xx, 84xx, 85xx
321.216.7012 22 2 81   ’81-82 1.5-2.0 Series B  = 3091?

 

4-hole versus 1-hole: The purpose of the holes is not for more or less flow. The holes allow reflected (negative) sonic pulses (pops!) to travel back up the head pipe to help draw out exhaust and draw in intake at the same time. More hole area makes more power. 

Hole location: The farther the holes are from the cylinder, the longer is the travel time of the negative sonic pulse (pop!), so the beneficial effect occurs at a lower rpm. That is why the 20mph version holes are near the rear, and the 30mph holes are near the front. 

EXHAUST FRONT PIPE left side 2-speed ∅26 seal ring
000.001.1111 ∅P H code years  power  H is # of holes, grey is unsure
349.516.6012 18 1 78t  ’78-78 1.0 Sport MkII
349.516.6012 18 1 79t  ’79-79 1.0 Sport MkII, Maxi II
349.516.6012 18 1 80t  ’80-83 1.0 Sport MkII, Newport II
349.516.6012 18 1 84t  ’84-84 1.0 Sport MkII, Newport II
349.516.6012 18 1 85t  ’85-85 1.0 Sport MkII, Newport II
349.616.6012 22 2 78T ’78-78 1.5 Sport MkII
349.616.6012 22 1 79T ’79-79 1.5 Sport MkII
349.616.6012 22 1 79T ’79-79 1.5 Maxi II
349.616.6012 22 1 80T ’80-83 1.5 Sport MkII, Newport II
349.616.6012 22 1 84T ’84-84 1.5 Sport MkII, Newport II
349.616.6012 22 1 85T ’85-85 1.5 Sport MkII, Newport II
321.416.6012 22 4 78T ’78-78 2.0 Sport MkII
321.416.6012 22 4 79T ’79-79 2.0 Sport MkII
321.416.6012 22 4 79T ’79-79 2.0 Maxi II
321.416.6012 22 4 80T ’80-83 2.0 Sport MkII, Newport II
321.416.6012 22 4 84T ’84-84 2.0 Sport MkII, Newport II
321.416.6012 22 4 85T ’85-85 2.0 Sport MkII, Newport II

 

1. Puch 1-speed exhaust on a 2-speed bike
2. How to tell the type, 1 or 2 speed
3. A third type, not yet identified 

The 2-speed cylinder is about 10 mm lower and 7 mm farther forward than a 1-speed cylinder. To make a 1-speed exhaust fit a 2-speed, the flange has to be re-angled by grinding to raise the rear pipe, the frame mount hole widened forward, and the pipe mount hole widened rearward.

’75-83 and some ’84: On these models with a 26mm ID seal ring, the tail pipe had only one mount hole. It was only slightly slotted, not enough to allow the 1 and 2 speed engines to use the same front exhaust pipe. 

’85-86 and some ’84: On these models with a 22mm ID seal ring, the tail pipe had several mount slots. That allowed the 1 and 2 speed front pipes to be the same dimensions.

 

EXHAUST FRONT PIPE left side 1- or 2-speed ∅22 seal ring
0000.001.1111 ∅P H code years  power H is # of holes, grey is unsure
349.516.7012 22 1 84s  ’84-84 1.5 Maxi Sport LS to 2421596
349.816.7012 22 2 85   ’85-86 1.5 Maxi
349.816.7012 22 1 86L ’84-86 1.5 Maxi Sport LS from 2421597
321.316.5012 22 2 86T ’85-86 1.5 Maxi Sport LS II
322.216.2012 22 2 85C ’85-86 1.5 Cobra
322.216.2012 22 1 86C ’85-86 1.5 Cobra II
349.116.9512 22 4 84s  ’84-84 2.0 Maxi Sport LS to 2421596
349.616.7012 22 4 85   ’85-86 2.0 Maxi
349.616.7012 22 4 86L ’84-86 2.0 Maxi Sport LS from 2421597
321.616.5012 22 4 86T ’85-86 2.0 Maxi Sport LS II
322.116.2012 22 4 85C ’85-86 2.0 Cobra
322.116.2012 22 4 86C ’85-86 2.0 Cobra II

 

EXHAUST FRONT PIPE right side 1- or 2-speed ∅22 seal ring
000.001.1111 ∅P H code years  power  H is # of holes, grey is unsure
345.216.1012 22 1 84A ’84-86 1.5 Austro Daimler (Maxi Plus)
345.216.1012 22 1 84T ’84-86 1.5 Austro Daimler (Maxi Plus) II
345.316.1012 22 4 84A ’84-86 2.0 Austro Daimler (Maxi Plus)
345.416.1012 22 4 84T ’84-86 2.0 Austro Daimler (Maxi Plus) II

 

EXHAUST FRONT PIPE left side 1- or 2-speed Magnum
000.001.1111 ∅P H code  years  power H is # of holes, grey is unsure
321.316.8012 00 0 78K  ’78-78 1.0 Magnum XK
321.316.8012 00 0 79K  ’79-79 1.0 Magnum XK
321.216.8012 25 6 78K  ’78-78 1.5-2.0 Magnum XK
321.216.8012 25 6 79K  ’79-79 1.5-2.0 Magnum XK
321.216.8012 00 0 78M ’78-78 1.0 Magnum MkII
321.216.8012 00 0 79M ’79-79 1.0 Magnum MkII
321.216.8012 00 0 80M ’80-83 1.0 Magnum II
321.216.8012 00 0 80M ’80-83 1.0 Magnum MkII (black)
321.516.8012 25 2 78M ’78-78 1.5 Magnum MkII
321.516.8012 25 2 79M ’79-79 1.5 Magnum MkII
321.516.8012 25 2 80M ’80-83 1.5 Magnum II
321.516.8012 25 2 80M ’80-83 1.5 Magnum MkII (black)
321.416.8012 25 6 78M ’78-78 2.0 Magnum MkII
321.416.8012 25 6 79M ’79-79 2.0 Magnum MkII
321.416.8012 25 6 80M ’80-83 2.0 Magnum II
321.416.8012 25 6 80M ’80-83 2.0 Magnum MkII (black)

Flange angle: The Magnum 9-fin cylinder has an angled exhaust flange, unlike the 7-fin and 8-fin cylinders which have horizontal flanges. So the 9-fin front pipe has a little less curve in it.

 

 

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10. Sprockets

000.000.0000  teeth 0 code years power  sprocket plain
000.561.1322 13x45T 75   ’75-76 1.0 Maxi-N, Maxi-S, Nostalgic
000.561.1322 13x45T 76   ’76-77 1.0 Rigid, Maxi, Maxi Sport, Newport
349.113.0141 14x45T 75   ’75-76 1.5 Maxi-N, Maxi-S, Nostalgic
349.113.0141 14x45T 76   ’76-77 1.5 Rigid, Maxi, Maxi Sport, Newport
349.113.0161 16x45T 75   ’75-76 2.0 Maxi-N, Maxi-S, Nostalgic
349.113.0161 16x45T 76   ’76-77 2.0 Rigid, Maxi, Maxi Sport, Newport
000.000.0000  teeth 0 code years power  sprocket rubber coated
000.150.1036 11x45T 78   ’78-78 1.0 NY GN, Maxi
000.150.1036 11x45T 78r  ’78-78 1.0 NY Maxi Luxe, Sport, Newport
000.150.1036 11x45T 79   ’79-79 1.0 NY GN, Maxi
000.150.1036 11x45T 79r  ’79-79 1.0 NY Maxi Luxe, Sport, Newport
000.150.1036 11x45T 80   ’80-83 1.0 NY Maxi
000.150.1036 11x45T 80r  ’80-83 1.0 NY Maxi Luxe
000.150.1036 11x45T 84   ’84-84 1.0 NY Maxi
000.150.1036 11x45T 84r  ’84-84 1.0 NY Maxi Luxe
349.113.1132 13x45T 78   ’78-78 1.0 GN, Maxi
349.113.1132 13x45T 78r  ’78-78 1.0 Maxi Luxe, Sport, Newport
349.113.1132 13x45T 78s  ’78-78 1.0-1.5 Sears Free Spirit
349.113.1132 13x45T 78K ’78-78 1.0 Magnum XK
349.113.1132 13x45T 79   ’79-79 1.0 GN, Maxi
349.113.1132 13x45T 79r  ’79-79 1.0 Maxi Luxe, Sport, Newport L
349.113.1132 13x45T 79K ’79-79 1.0 Magnum XK
349.113.1132 13x45T 80   ’80-83 1.0 Maxi
349.113.1132 13x45T 80r  ’80-83 1.0 Maxi
349.113.1132 13x45T 81   ’80-82 1.5 Series B
349.113.1132 13x45T 80m 79-82 1.5 Murray 8315, 8415, 8515
349.113.1132 13x45T 84   ’84-85 1.0 Maxi to 7736972
349.113.1132 13x45T 84r  ’84-84 1.0 Maxi Luxe
349.113.1142 14x45T 78   ’78-78 1.5 GN, Maxi
349.113.1142 14x45T 78K ’78-78 1.5 Magnum XK
349.113.1142 14x45T 79   ’79-79 1.5 GN, Maxi
349.113.1142 14x45T 79K ’78-78 1.5 Magnum XK
349.113.1142 14x45T 80   ’80-83 1.5 Maxi
349.113.1142 14x45T 84   ’84-85 1.5 Maxi to 7736972
349.113.1142 14x45T 84s  ’84-85 1.5 Maxi Sport LS to 2421596
349.113.1152 15x45T 78s  ’78-78 2.0 Sears Free Spirit
349.113.1152 15x45T 78L ’78-78 1.5 Maxi Luxe, Sport, Newport L
349.113.1152 15x45T 79L ’79-79 1.5 Maxi Luxe
349.113.1152 15x45T 80L ’80-83 1.5 Maxi Luxe
349.113.1152 15x45T 80m 79-82 2.0 Murray 8320, 8420, 8520
349.113.1152 15x45T 81   ’80-82 2.0 Series B
349.113.1152 15x45T 84s  ’84-85 2.0 Maxi Sport LS to 2421596
349.113.1152 15x45T 84L ’84-84 1.5 Maxi Luxe
349.113.1152 15x45T 85   ’85-86 2.0 Maxi from 7736973
349.113.1162 16x45T 78   ’78-78 2.0 GN, Maxi
349.113.1162 16x45T 78K ’78-78 2.0 Magnum XK
349.113.1162 16x45T 79   ’79-79 2.0 GN, Maxi
349.113.1162 16x45T 79K ’78-78 2.0 Magnum XK
349.113.1162 16x45T 80   ’80-83 2.0 Maxi
349.113.1162 16x45T 84   ’84-85 2.0 Maxi to 7736972
349.113.1162 16x45T 84L ’84-84 2.0 Maxi Luxe
349.113.1162 16x45T 85L ’85-85 2.0 Maxi Luxe
349.113.1162 16x45T 86L ’85-86 1.5-2.0 Maxi Sport LS from 2421597
349.113.1182 18x45T 78t  ’78-78 1.0 Sport MkII
349.113.1182 18x45T 78M’78-78 1.0 Magnum MkII
349.113.1182 18x45T 79t  ’79-79 1.0 Sport MkII, Maxi II
349.113.1182 18x45T 79M’79-79 1.0 Magnum MkII
349.113.1182 18x45T 80t  ’80-83 1.0 Sport MkII, Newport II
349.113.1182 18x45T 80M’80-82 1.0 Magnum MkII
349.113.1182 18x40T 80M’80-81 1.0 Magnum II
349.113.1182 18x45T 84t  ’84-84 1.0 Sport MkII, Newport II
349.113.1182 18x45T 85t  ’85-85 1.0 Sport MkII, Newport II
349.113.1182 18x40T 78T ’78-78 1.5-2.0 Sport MkII
349.113.1182 18x40T 78M’78-78 1.5-2.0 Magnum MkII
349.113.1182 18x40T 79T ’79-79 1.5-2.0 Sport MkII
349.113.1182 18x40T 79T ’79-79 1.5-2.0 Maxi II
349.113.1182 18x40T 79M’79-79 1.5-2.0 Magnum MkII
349.113.1182 18x40T 80T ’80-83 1.5-2.0 Sport MkII, Newport II
349.113.1182 18x40T 80M’80-82 1.5-2.0 Magnum MkII
349.113.1182 18x40T 80M’80-81 1.5-2.0 Magnum II
349.113.1182 18x40T 84T ’84-84 1.5-2.0 Sport MkII, Newport II
349.113.1182 18x40T 85T ’85-85 1.5-2.0 Sport MkII, Newport II
349.113.1182 18x40T 86T ’85-86 1.5-2.0 Maxi Sport LS II

 

 

 

 

This is the old version that has been replaced.