Dellorto SHA is a family of Italian moped or mini-bike carburetors. SHA’s have flat throttle slides and no jet needles. They all have the same outer size and main body appearance, with a 59mm round flange for an air filter. They have been produced for in Italy from the 1960’s to the 2000’s. In particular the Dellorto SHA 14/12 and 14/9 carburetors were on tens of thousands of US mopeds from 1976 to 1985.
Arbeo-Dellorto SHA carbs were made in Spain under license for the Spanish moped Derbi. They were more goldish colored, and tended to leak fuel past the float seat.
Generic SHA: Since the 2000’s there are China made remakes. Most have different screw threads, not Italian-metric. Many have M5-0.80 jet threads, different from Dellorto M5-0.75. The Runtong remake carb has M5-0.75 jet threads. So it can take any Dellorto M5 jet, but many other generics cannot.
Carburetor Size: The venturi is where the air mixes with gasoline. It is also where the air passage gets narrower, to cause a higher air speed in order to atomize or break up the liquid fuel into smaller droplets. With Dellorto SHA carburetors, two numbers are used to describe the size of the venturi. The first number is the venturi exit, and the second number is the venturi entrance. So looking at an SHA 14/12 from the front you see a 12mm hole, and from the back (engine side) you see a 14mm hole.
Choke Type: The choke is a lever you push or pull, “on” for cold starting, or “off” for normal running. There are three types used on Dellorto SHA carburetors:
A direct lever push down lever on carb to put choke “on”, give full throttle to release it “off”
B linkage lever same operation as direct lever
C cable choke cable goes to a handlebar thumb lever, pull to put choke “on”, let go for “off”
Cable choke is needed when the carburetor choke lever cannot be reached by hand.
Original Carburetors
Originals choke approx. clamp xxx fits on
ID # size type xxyears size sleeve intake stock jets applications
SHA 14/9 A lever 1960-90 20 20-16 16.00 44, 46, 48 20-25mph
SHA 14/9 A lever 1960-90 20 20-18 18.00 same
SHA 14/12 A lever 1960-90 20 20-16 16.00 48, 50, 52 25-30mph
SHA 14/12 A lever 1960-90 20 20-18 18.00 same
SHA 12/12 A lever 1970-85 20 20-18 18.00 50, 52, 54 ’75-86 Derbi
SHA 12/12C C cable 1980-90 20 20-18 18.00 50, 52, 54 ’86-90 Derbi
SHA 14/12P B linkage ’85-on 21 21-18 18.00 00, 51, 53 ’86-06 Tomos
Replacement Carburetors
SHA 14/12L lever choke, 57 jet, air cover #39
replaces carbs that clamp to 16, 17, 18 or 19 mm intake pipes
$73.0 with 21 x 16 sleeve some SHA 14/9, 14/12
$73.0 with 21 x 17 sleeve
$70.0 with 21 x 18 sleeve 14/12P, Arbeo 12/12, some SHA 14/9, 14/12
$73.0 with 21 x 19 sleeve
SHA 14/12R cable choke, 54 jet
N/A has 19 mm clamp replaces Gurtner Motobecane side-mount
SHA 15/15L lever choke, 68 jet, air cover #39
replaces carbs that clamp to 16, 17, 18 or 19 mm intake pipes
N/A with 21 x 16 sleeve
N/A with 21 x 17 sleeve
N/A with 21 x 18 sleeve 14/12P, Arbeo 12/12, some SHA 14/12
N/A with 21 x 19 sleeve
SHA 15/15C cable choke, 70 jet, air cover #39
replaces carbs that clamp to 16, 17, 18 or 19 mm intake pipes
$73 with 21 x 16 sleeve
$73 with 21 x 17 sleeve
$73 with 21 x 18 sleeve Arbeo 12/12C
$70 with 21 x 19 sleeve
Clamp size: These new replacement carburetors only clamp tight when the intake pipe is exactly the right size. Many intakes are made slightly smaller or become smaller from wear. When the clamp screw is tightened fully, the carburetor can still move, and eventually slip off. For a 18 sleeve, a 18.00 to 18.10 pipe would clamp tight, but 17.95 or less pipe would not clamp tight. That is not very much forgiveness.
Cut up a can: A strip cut out from an aluminum can, with scissors, can be placed under the sleeve. Thickness is 0.1mm. Either a 1/3 circle or a full circle can be used, as needed. A full circle adds 0.2 to the clamp diameter, for a 17.80 to become 18.00. A 1/3 circle adds 0.1 mm, for a 17.90 to become 18.00. A thin aluminum baking pan is thinner than a can. A thinner full circle is better for when only a little is needed.
Most brand new original Garelli, Minarelli, and Tomos intake manifolds (pipes) are 18.00. But some are 17.95, and actually need a 1/3 strip of aluminum can inserted in order to clamp tight and proper, with new original carburetors.
Cable pipes are for redirecting the throttle cable. Pipe thread is M6-0.75. Adjuster thread is M5-0.75. A throttle cable end can pass through, except 2d. Bikes with front carburetors don’t need them, because the cable goes straight up. Others have gas tanks or floor boards that the cable must go under or around.
a
Although some are shown with adjusters, cable pipes do not include #3a pipe adjuster and #3 pipe lock nut.
P A R T S L I S T
price colors mean used new new
part# colors mean Dellorto, Minarelli, Tomos, other
pic# price part# description
1 $2.00 1476 rubber boot long
1a $2.00 1476A rubber boot short 219624
2 $5.00 1104 top adjuster with nut A13 M6-0.75
2a $13.0 7423 cable pipe Vespa 22×30 90º use 2ar
2ar $6.00 7423r cable pipe Vespa 22×30 90º
2b none 3698 cable pipe 6560 20×28 90º use 2br
2br $16.0 3698r cable pipe xxxx 20×30 90º
2c $13.0 3600 cable pipe 6680 long 70º use 2cr
2cr $8.00 243152 cab. pipe Tomos long 70º
2d $7.00 pipe2d cable pipe Derbi long 70º no adj.
2e $7.00 80210400 c. pipe Garelli medium 35º
2f $15.0 163515835 pipe GarVIP short 45º
2g $5.00 pipe2g cable pipe xxxxx 30×27 90º
2h $5.00 219623 cab. pipe T. A35 med. 70º
2j $5.00 pipe2j cable pipe xxxx med. 32º
2k none 10854 cable pipe xxxx long 50º
2n none pipe2n cable pipe xxxx long 40º
2as $9.00 53036 cable pipe set 1+2ar+a
2cs $14.0 53037 cable pipe set 1+2h+2cr+3a
2ks none 53038 cable pipe set 1+2k+3a
2js none 53073 cable pipe set 1a+2j+3a
2gs $9.00 53040 11630cu set 1+2g+3a
2fs none 265146 Malossi set 1a+2fr
2ns none 53058 cable pipe set 2n+3b
3 $3.00 1691 cable pipe nut M6-0.75 special
3a $6.00 219625 pipe adjuster with nut M5-0.75
3b $3.00 1692 pipe adjuster lock nut M5-0.75
pic# part# price description
4 3318 $2.00 top screw M4-0.75 x 14 slot not M4-0.7
5 5011 $1.50 narrow washer M4
6 6110M $5.00 top bare metal 6320
6a 6110 $5.00 top bare white plastic
6b 6110 none top bare black plastic
6c 219596 $16.0 top bare black angled hole 30° 85-06 Tomos
6d top6d $15.0 top assy metal 6+7+8+9+10
6e top6e $15.0 top assy white 6a+7+8+9+10
6f 13662 none top assy black 6b+7+8+9+10
7 6115 $2.00 hinge pin (in top) 6510
8 6259 $2.00 spring choke (in top) 6460
9 6112 $5.00 lever choke trigger 6450
10 6111 00 $3.00 gasket for carb top 6410
11 3346 00 $10.0 spring throttle return 6480
12 6108/64 $12.0 slide throttle #1 metal 219580 6590 25mph
12a 6108/2x $8.00 slide throttle #2 metal 20mph
12b 6108 00 none slide throttle #12 plastic
13 4190 $5.00 screw 6620 M5-0.75 x 15 not regular metric
14 3385 $1.00 seal washer 5 x 9 for metal banjo not plastic
15 6106 $8.00 banjo metal angled out 6530 3/16″
15a 219584 $9.00 banjo inlet metal straight 3/16″
15b 00-9249 $7.00 banjo plastic angled out 6535 3/16″
15c Derb15b N/A banjo inlet thick 1/4″ put a thin hose over 15a
16 6109 $5.00 filter fuel plastic mesh 6360
17 6304 $2.50 nut M6 teardrop 6350 most have regular nut
18 6159 $3.00 gasket for air filter 6420
19 6105 $3.00 spring for choke plate 6470
20 6112 $7.00 choke plate-lever short type A lever choke
20a 6114 $7.00 choke plate-lever medium 6570
20b 8026 $7.00 choke plate-lever long 6580 Cimatti type
21 5417 $3.00 pivot step-bolt choke 6520
22 8773 $2.00 hinge pin 6500 Ø2.0 x 16.5
23a 0-14148 $7.00 21-16 sleeve, inner lip for 16.00 mm intakes
23b 0-12914 $7.00 21-17 sleeve, inner lip for 17.00 MB (some)
23c 0-10811 $7.00 21-18 sleeve, inner lip for 18.00 mm intakes
23d 0-11362 $7.00 21-18 sleeve, outer lip for 18.00 mm intakes
23e –227324 $5.00 rubber ring, for 23d 21 x 16 x 3.5 angled
23e -227324 $5.00 only for carbs that have sleeve 23d Tomos
23f 0-10146 $7.00 21-19 sleeve, inner lip for 19.00 Peugeot, MB
23g 2300 $7.00 21-19 sleeve, outer lip for 19.00 Peugeot, MB
23h 6124 $5.00 20-16 sleeve, inner lip for 16.00 Morini MO1,
23h continued Demm, Benelli G2, Tomos ’74-85, Batavus M48
23i 6448 $7.00 20-18 sleeve, inner lip for 18.00 Minarelli V1,
23i continued Garelli, Tomos ’85-06, Morini M1
23j 00 19-17 $22.0 19-17 sleeve, inner lip for Motobecane (some)
23k –114482 $12.0 18-16 sleeve, inner lip for Vespa type SHA
24 6305 $2.00 clamp bolt M6-1.00
25 6140 $4.00 idle screw M4-0.70 x 25 regular metric !
26 3606 $2.00 spring idle Ø4 Ø6 x 12
27 2838 $10.0 float needle valve L=17.0 photo
Left is genuine, right is aftermarket. The sizes do not agree.
See Dellorto Jets. These are all genuine jets with the INC logo.
28 1486/42 $5.00 jet 42 0.0178″=0.451 M5-0.75 thread (all)
28 1486/43 none jet 43 0.0182″=0.462 pre-78 Ciao & Bravo
28 1486/44 $5.00 jet 44 0.0186″=0.472
28 1486/45 none jet 45 0.0190″=0.483 78-on Ciao & Bravo
28 1486/46 $5.00 jet 46 0.0194″=0.493
28 1486/47 $7.00 jet 47 0.0198″=0.503
28 1486/48 $5.00 jet 48 0.0202″=0.513 most 20mph mopeds
28 1486/49 $7.00 jet 49 0.0207″=0.525 78-on Vespa Grande
28 1486/50 $5.00 jet 50 0.0210″=0.533 76-80 Garelli (some)
28 1486/51 $7.00 jet 51 0.0215″=0.546 85-91 Tomos late A3
28 1486/52 $5.00 jet 52 0.0219″=0.556 most 30mph mopeds
28 1486/53 $7.00 jet 53 0.0223″=0.566 92-95 Tomos early A35
28 1486/54 $5.00 jet 54 0.0227″=0.577 86-90 Derbi (flat reed)
28 1486/55 none jet 55 0.0231″=0.587
28 1486/56 $5.00 jet 56 0.0235″=0.597 96-06 Tomos late A35
28 1486/58 $5.00 jet 58 0.0242″=0.615
28 1486/60 $5.00 jet 60 0.0247″=0.627 96-06 Tomos+exhaust
28 1486/62 none jet 62 0.0255″=0.648
28 1486/64 none jet 64 0.0262″=0.665
28 1486/66 none jet 66 0.0268″=0.681
28 1486/68 none jet 68 0.0274″=0.696
28 1486/70 none jet 70 0.0280″=0.711
29 6122-80 $18.0 float all white plastic
30 6123–00 $2.00 gasket rubber ring all new ones are round
31 6107-96 $5.00 float bowl metal
31 0 13412 $5.00 float bowl plastic
32 3598-36 $4.00 screw M4-0.75 x 18 not regular metric
33 4611-50 $4.00 clamp w/nut M4-0.75
34 4617-36 N/A screw M4-0.75 x 25 re-thread nut to use #8-32
35 6117-86 $9.00 air filter metal screen
36 7204-85 $10.0 air box small thin type 1 no tubes 40
37 8603-85 $11.0 air box large thick type 5 no tubes 41
37 8605-85 $12 air box large thick type 3 not shown
38 5660M $15.0 air box Minarelli type black new Malossi
38 005660 $25.0 air box Minarelli type gray used original
39 0-53051 $17.0 air cap, clip and screen set
39a 53051a $10.0 air cap only
39b 53051b $6.00 clip only
40 7195-35 $7.00 restrictor tube small Ø8×20
41 5309-35 $8.00 restrictor tube large Ø9×50
42 6090813 $22.0 air filter aftermarket this needs a bigger jet
42 compact air filter, fits 1996-06 Tomos
43C 53057 $8.00 cable choke plate set type C 43a+43b+21
43a plate43 $6.00 cable choke plate only type C
43b spring43 $3.00 cable choke spring only
44B 223025 $7.00 pivot shaft w/linkage type B, gets rounded
45B 223027 $2.00 spring for pivot shaft type B
46B 223026 N/A choke plate xxxxxxx type B
47B 223028 $7.00 choke lever external B, gets hourglass-shaped
48B 031930 $1.00 lock washer M4 B, better to weld 46,47,49
49B 031073 $1.00 nut M4-0.70 B, better to weld 46,47,49
50 g-set50 $6.00 gasket set for y’all 10, 14, 30
51 0-52533 $10.0 gasket set pre-’85 10, 14, 30, 18, 18, 1a, 55, 56
51 0-52533 $10.0 for older SHA pre-1985 with 20mm clamp size
52 0-52579 $12.0 gasket set post-85 10, 14, 30, 18, 23e, 23e, 57
52 0-52579 $12.0 for newer SHA 1985-on with 21mm clamp size
55 0-ring55 $2.00 square rubber ring 14 x 20 x 2.0 for some pre-85
55 0-ring55 $2.00 only for 20mm intakes (when no sleeve is installed)
56 0-ring56 $1.00 tiny rubber o-ring 3 x 6.5 x 1.75 only for ?
57 0-ring57 $2.00 square rubber ring 15 x 21 x 2.0 for some post-85
57 0-ring57 $2.00 only for 21mm intakes (when no sleeve is installed)
Tomos Parts
51 219374 $10.0 junction sleeve replica center mount 85-95 A3+A35
52 219373 $19.0 air box bare (silencer) xxxx 85-95 A3+A35
53 214330 $12.0 inlet tube Ø12.5×60 straight 85-91 A3 (pre-85 with Encarwi was Ø9)
53 223606 $9.00 inlet tube Ø12.5×110 curved 92-95 A35
55 229705 $14.0 junction sleeve side mount x 96-06 A35
56 229706 $2.50 inlet grommet xxxxxxxxxxxx 96-06 A35
57 229769 $35.0 air box assy 57, 58, 59 xxxx 96-06 A35
58 044438 $1.00 air box screw xxxxxxxxxxxxx 96-06 A35
59 229704 $7.00 air filter foam xxxxxxxxxxxx 96-06 A35
60 025195 $0.60 intake screw M6x30 hex xxx 85-91 A3
61 026289 $0.50 intake screw M6x18 hex xxx 85-91 A3
62 031932 $0.20 washer M6 xxxxxxxxxxxxxx 85-91 A3
63 219371 $15.0 center intake A3 xxxxxxxxxx 85-91 A3
63 219564 $18.0 center intake A3 (oil inject) 85-91 A3
64 219372 $5.00 intake gasket thin xxxxxxxx 85-91 A3
65 026566 $1.50 intake screw M5x20 allen xx 92-95 A35
66 031931 $0.20 washer 5mm xxxxxxxxxxxxx 92-95 A35
67 227592 N/A center intake A35 (oil inject) 92-95 A35
68 223748 $3.00 reed valve gasket xxxxxxxxx 92-06 A35
69 222238 $34.0 reed valve 2-petal xxxxxxxx 92-06 A35
70 229707 N/A side intake (no oil inject.) xx 96-06 A35
71 229716 $21.0 side intake (oil injection) xxx 96-06 A35
An oil-injection intake has a M6-threaded hole for the oil line. A no-oil injection intake does not.
Plug the hole with a M6x8 bolt and M6 seal washer, to convert oil-injection to no oil injection.