Allens Performance Ltd.

VM28-418 (TM28) Data Set

# Description VM28-418
1 Cold Start Assy VM26/116
2 Thrust pad: Throttle Spring VM28/1046
3 Screw: Needle Retainer CW2=0310
4 Retainer: Jet Needle VM28/1042
5 E-Clip: Jet Needle VM18/341
6 Jet Needle #
7 Throttle Valve 832-33001-size
10 Screw: Throttle Valve Guide VM38/132
11 Washer: Throttle Valve Guide VM34/274
14 Pivot: Float Arm VM30/160
16 Retainer: Float VM26/42
17 Pilot Jet VM22/210-size
18 Float Assy VM28/694
19 Gasket: Float Bowl VM26/228
20 Float Bowl VM26/220-15
21 Retainer: Vent Hose VM30/113
22 Screw: Float Bowl CW2=0416
23 Gasket: Drain Screw VM26/227
24 Drain Screw VM28/817
30 Dust Cover: Cable Adjuster VM26/46
31 Screw: Carburettor Top CW2=0412
32 Cable Adjuster M18F/43a
33 Locknut: Cable Adjuster B30/247
34 Carburettor Top 776-15001
35 Gasket: Carburettor Top VM28/1045
36 Spring: Throttle Valve Return 730-15001
37 Needle Jet VM30/46-size
38 Baffle: Main Jet VM28/429
39 Main Jet 4/042-size
40 O-ring: Float Valve Assy VM24/559
41 Float Valve Assy VM24/557-size
42 Retaining Plate: Float Valve Assy VM24/560
43 Screw: Retaining Plate C2=0408
44 Vent Hose 888-23008
45 Gasket: Carb Body VM28/1044
48 ScrewL Carburettor Body CW2=0412
49 Pilot Air Screw VM20/584
50 Spring: Pilot Air Screw M12F/46a
53 Main Air Jet BS30/97-size
54 Vent Hose 888-23007
55 Starter Jet VM17/1002-size
56 Tickover Screw 603-27002
57 Spring: Tickover Screw VM15/112
58 O-Ring: Tickover screw VM14/75
59 Washer: Tickover Screw VM14/87
MOUNT TYPE Spigot MAIN JET 4/042-Size 180
TICKOVER POSITION Left PILOT JET VM22/210-Size 15
COLD START POSITION Left NEEDLE JET VM30/46-Size (175) P-8
COLD START TYPE Lever JET NEEDLE 5DP39 Clip groove #3
AIR SCREW POSITION Left STARTER JET VM17/1002-Size 15
FLANGE PITCH (MM) PILOT AIR JET
CLAMP DIA (MM) PILOT AIR SCREW VM20/584 2 Turns out
FRONT SPIGOT DIAMETER (MM) 33 MAIN AIR JET BS30/97-Size 1.80
REAR SPIGOT DIAMETER (MM) 44 POWER JET
LENGTH (MM) 82 THROTTLE VALVE 832-33001-Size 2.5
HEIGHT OVER BORE CENTRELINE (MM) 83 FLOAT VALVE VM24/557-Size 2.5
HEIGHT UNDER BORE CENTRELINE (MM) 85
FUEL INLET POSITION Right
FLOAT HEIGHT (MM) 22
FUEL SPIGOT (MM) 6