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.
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.
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.
Original Carburetors
’60-85 Dellorto SHA 14/9 has a lever choke,
20 mm clamp, 16 or 18 sleeve, jet 44, 46 or 48.
Original on 20-25 mph models.
’60-85 Dellorto SHA 14/12 has a lever choke,
20 mm clamp, 16 or 18 sleeve, jet 48, 50 or 52.
Original on 25-30 mph models.
’85-06 Dellorto SHA 14/12P has a linkage choke,
21 mm clamp, 18 sleeve, jet 51 or 53.
Original on 25-30 mph ’85-06 Tomos.
’75-86 Arbeo SHA 12/12 has a lever choke,
20 mm clamp, 18 sleeve, jet 52. Spain 14/12
Original on ’75-86 Derbi models.
’86-90 Arbeo SHA 12/12C has a cable choke,
20 mm clamp, 18 sleeve, jet 54. Spain 14/12C
Original on ’86-90 Derbi models.
Replacement Carburetors for Sale
Dellorto SHA 14/12L has a lever choke,
21 mm clamp, 18 sleeve, jet 57, air cover #39
Genuine replacement for SHA 14/12.
Can replace carbs that clamp to 16-19 mm intakes.
$73.0 with 16, 17, or 19 sleeve, $70.0 with 18 sleeve
Dellorto SHA 14/14R has a cable choke,
19 mm clamp, no sleeve, jet 54, air cover #38d
Replaces Gurtner Motobecane AR2 side-mount.
$85 with choke and throttle cable inner wires
Dellorto SHA 15/15C has a cable choke,
21 mm clamp, 18 sleeve, jet 70, air cover #39
Can replace carbs that clamp to 16-19 mm intakes.
$73 with 16, 17, or 19 sleeve, $70 with 18 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 219624 rubber boot short
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 6320 top bare metal
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 6510 hinge pin (in top)
8 6259 $2.00 6460 spring choke (in top)
9 6112 $5.00 6450 lever choke trigger
10 6111 00 $3.00 6410 gasket for carb top
11 3346 00 $10.0 6480 spring throttle return
12 6108/64 $12.0 6590 slide throttle #1 metal 219580 25mph
12a 6108/2x $8.00 slide throttle #2 metal 20mph
12b 6108 00 none slide throttle #12 plastic
13 4190 0 $5.00 6620 screw M5-0.75 x 15 not regular metric
14 3385 0 $1.00 seal washer 5 x 9 for metal banjo not plastic
15 6106 0 $8.00 6530 banjo metal angled out 3/16″
15a 219584 $9.00 banjo inlet metal straight 3/16″
15b 9249 0 $7.00 6535 banjo plastic angled out 3/16″
15c Der15c none banjo inlet thick 1/4″ put a thin hose over 15a
16 6109 0 $5.00 6360 filter fuel plastic mesh
17 6304 0 $2.50 6350 nut M6 teardrop most have regular nut
18 6159 0 $3.00 6420 gasket for air filter
19 6105 0 $3.00 6470 spring for choke plate
20 6112 $7.00 choke plate-lever short type A lever choke
20a 6114 $7.00 6570 choke plate-lever medium
20b 8026 $7.00 6580 choke plate-lever long Cimatti type
21 5417 $3.00 6520 pivot step-bolt choke
22 8773 $2.00 hinge pin 6500 Ø2.0 x 16.5
23a 14148 $7.00 21-16 sleeve, inner lip for 16.00 mm intakes
23b 12914 $7.00 21-17 sleeve, inner lip for 17.00 MB (some)
23c 10811 $7.00 21-18 sleeve, inner lip for 18.00 mm intakes
23d 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 $0.00 only for carbs that have sleeve 23d Tomos
23f 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 cont Demm, Benelli G2, Tomos ’74-85, Batavus M48
23i 6448 $7.00 20-18 sleeve, inner lip for 18.00 Minarelli V1,
23i cont Garelli, Tomos ’85-06, Morini M1
23j 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
28 jet M5-0.75 thread
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
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
29 6122-80 $18.0 float all white plastic
30 6123-00 $2.00 float gasket ring all new ones are round
31 6107-96 $5.00 float bowl metal
31 13412 0 $5.00 float bowl plastic
32 3598-36 $4.00 float bowl screw M4-0.75 x 18 not regular metric
33 4611-50 $4.00 cover clamp ∅60 replica with screw
34 4617-36 none clamp screw M4-0.75 re-thread nut to use #8-32
35 6117 $9.00 air filter metal screen
00x 0 ∅58 id air covers TL# bare says color holes
36 7758 $23.0 cover #0 assy 00 000 black 2-∅10 with #40 tubes
36 7204 none cover #0 bare 00 000 black 2-∅10, no tubes
36 9887 $10.0 cover #1 bare 00 000 black 2-∅12, no tubes
37 8602 none cover #7 bare S33 00 black 2-∅12, no tubes
37 0000 none cover #0 bare S33 00 grey 2-∅12, no tubes
37a 8603 $11.0 cover #5 bare S3 F44 black 2-∅12, no tubes
37a 0000 none cover #0 bare S3 F44 grey 2-∅12, no tubes
37a 10574 none cover #0 bare 00 000 black 3-∅12, no tubes
37b 8632 none cover #0 bare 00 000 black 2-∅12, no tubes
38 5660 $32.0 cover #0 bare S1 Min gray 2-
38 5660 $25.0 cover-clamp S4 S1 Min gray 2-
38 5660M $15.0 cover-clamp S4 S1 Min black 2-
38a 5346 $12.0 cover #3 bare F27 00 black 2-∅12, no tubes
38b 5199 none cover #0 bare 10236 black 2-∅12, no tubes
38c 9723 none cover #6 bare Garelli black 2-∅10, no tubes
38d 53056 $21.0 cover #4 assy F51 00 black 2-∅12 with #41 tubes
38e 12971 none cover #2 bare F49 00 black
39 53051 $17.0 air cap, clip, screen set
39a 6183 $10.0 air cap only ∅58 ID
39b 6235 $6.00 clip only
40 7195 $7.00 air inlet tube small Ø8 Ø10 x 20
41 5309 $8.00 air inlet tube large Ø9 Ø12 x 50
42
42 90813 $22.0 air filter, fits 96-06 Tomos, needs a bigger jet
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 none 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
a
50 gset50 $6.00 gasket set SHA14 10, 14, 30
51 52533 $10.0 gasket set pre-’85 10, 14, 30, 18, 18, 1a, 55, 56
51 52533 $10.0 for older SHA14 pre-1985 with 20mm clamp size
52 52579 $12.0 gasket set post-85 10, 14, 30, 18, 23e, 23e, 57
52 52579 $12.0 for newer SHA14 1985-on with 21mm clamp size
55 ring55 $2.00 square rubber ring 14 x 20 x 2.0 for some pre-85
55 ring55 $2.00 only for 20mm intakes (when no sleeve is installed)
56 ring56 $1.00 tiny rubber o-ring 3 x 6.5 x 1.75 only for ?
57 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 85-95 A3+A35
51 219374 $10.0 junction sleeve center mount
52 219373 $19.0 air box bare (silencer)
Tomos 85-91 A3 (pre-85 was Encarwi Ø9 intake)
53 214330 $12.0 intake tube Ø12.5 x 60 straight
60 025195 $0.60 intake screw M6x30 hex
61 026289 $0.50 intake screw M6x18 hex
62 031932 $0.20 washer M6
63 219371 $15.0 center intake A3
63 219564 $18.0 center intake A3 (oil inject)
64 219372 $5.00 intake gasket thin
Tomos 92-95 A35
53 223606 $9.00 inlet tube Ø12.5×110 curved
65 026566 $1.50 intake screw M5x20 allen
66 031931 $0.20 washer 5mm
67 227592 N/A center intake A35 (oil inject)
Tomos 96-06 A35
55 229705 $14.0 junction sleeve side mount
56 229706 $2.50 inlet grommet
57 229769 $35.0 air box assy 57, 58, 59
58 044438 $1.00 air box screw
59 229704 $7.00 air filter foam
68 223748 $3.00 reed valve gasket
69 222238 $34.0 reed valve 2-petal
70 229707 N/A side intake (no oil inject.)
71 229716 $21.0 side intake (oil injection)
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.