Allens Performance Ltd.

VM38-9 Data Set

MOUNT TYPE Spigot MAIN JET 4/042-Size 330
TICKOVER POSITION Right PILOT JET VM22/210-Size 30
COLD START POSITION Left NEEDLE JET VM34/17-Size (166) Q-2
COLD START TYPE Lever JET NEEDLE 6DP1 Clip groove #3
AIR SCREW POSITION Right STARTER JET Fixed 80
FLANGE PITCH (MM) PILOT AIR JET
CLAMP DIA (MM) PILOT AIR SCREW VM20/214 1.5 Turns out
FRONT SPIGOT DIAMETER (MM) 43 MAIN AIR JET BS30/97-Size 0.5
REAR SPIGOT DIAMETER (MM) 62 POWER JET
LENGTH (MM) 116 THROTTLE VALVE VM38/24-Size 2.5
HEIGHT OVER BORE CENTRELINE (MM) 84 FLOAT VALVE VM34/39-Size 3.3
HEIGHT UNDER BORE CENTRELINE (MM) 86
FUEL INLET POSITION Left
FLOAT HEIGHT (MM) 18
FUEL SPIGOT (MM) 8
Exploded Diagram Mikuni VM38-9

 

Position Description VM38-9
1 Dust Cover: Cable Adjuster VM26/46
2 Cable Adjuster M21/14
3 Locknut: Cable Adjuster B30/247
4 Carburettor Top VM36/09
5 Seal: Carburettor Top VM36/06
6 Spring: Throttle Return VM34/152
7 Retaining Plate: Jet Needle VM35/09
8 E Clip: Jet Needle VM18/341
9 Jet Needle #
10 Throttle Valve VM38/24-size
11 Needle Jet VM34/17-size
12 Dust Cover: Cold Start Assy VM20/455
13 Retainer: Cold Start Assy VM20/456
14 Lever: Cold Start Assy VM28/124
15 Indexing Plate VM32/17
16 Spring: Cold Start Assy VM16/42
17 Plunger: Cold Start Assy VM18/144
18 Carburettor Body N/A
19 Gasket: Float Bowl VM36/20
20 Float Bowl Baffle Plate VM36/40
21 Pilot Jet VM22/210-size
22 Pivot: Float Arm VM30/160
23 Float Arm VM36/15
24 Float VM24/236
25 Float Bowl VM36/07-size
26 Gasket: Float Bowl Drain Screw 4/053
27 Float Bowl Drain Screw: Machined Brass

O-ring: Float Bowl Drain Screw (Die Cast type

VM38/08

VM28/254

27 Float Bowl Drain Screw (Brass, machined.)

Float Bowl Drain Screw: Die Cast

VM38/08
VM38/27-1B
28 Main Air Jet BS30/97-size
29 Pilot Air Screw VM20/214
30 Spring: Pilot Air Screw M12F/46
31 Spring: Tickover Screw M20/11
32 Tickover Screw VM22/171
33 Gasket: Float Valve Assy B34/52-size
34 Float Valve Assy VM34/39-size
35 Baffle: Main Jet N/A (See #46)
36 Main Jet 4/042-size
37 Retainer: Vent Hose VM28/79
38 Screw: Float Bowl CW2=0516
39 Cold Start Assy: Optional  Knob Type VM29/47
46 Main Jet Holder VM38/09
49 Retainer: Floats VM26/42