Carburetor Specs
Note: Carburetor I.D. marks are on the front (Facing engine) of the channel for the choke mechanism.
| Model | I.D. Mark | Make | Type |
Float Level |
Fuel Level |
Main Jet Size/Type | NeedleJet/Primary choke height | Jet Needle/Clip Position | Pilot Jet | Throttle Valve Cutaway |
Air Screw (Turns out) |
| H1 w/o CDI | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #90 Reverse | #O-2 | #5EH7-3rd | #30 | #2.5 | 1 1/2 | |
| H1 w/CDI | KA1 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #100 Reverse | #O-2 | #5GL3-3rd | #30 | #3.0 | 1 1/4. |
| H1A | KAE-1 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #100 Reverse | #O-2 | #5GL3-3rd | #30 | #3.0 | 1 1/4 |
| H1B | KA4 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #95 Reverse |
#O-4/8mm #O-4 -Europe |
#5DJ19-4th | #30 |
#2.0 #2.5 -Europe |
1 1/2 1 1/4 -Europe |
| H1C | KA5 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #100 Reverse | #O-2 | #5GL3-3rd | #30 | #3.0 | 1 1/4 |
| H1D,E | KA6 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #92.5 Reverse | #O-4/8mm | #5DJ19-4th | #30 | #2.0 | 1 1/4 |
| H1F | KA6 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #90 Reverse | #O-4/8mm | #5DJ19-3rd | #30 | #2.0 | 1 1/2 |
| KH500 | KH5 | Mikuni VM28SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #75 Reverse | #O-4/8mm | #5DJ19-3rd | #25 | #2.0 | 1 1/2 |
| H2 | H2 | Mikuni VM30SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #105 Reverse | #O-6/2mm | #5FL14-2nd | #35 | #2.5 | 1 1/2 |
| H2, H2A | H2-1,H2-2,H2-4 | Mikuni VM30SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #97.5 Reverse | #O-6/8mm | #5EJ15-3rd | #35 | #2.5 | 1 1/2 |
| H2B, H2C | H2-5 | Mikuni VM30SC | Primary | 23.0-25.0mm | 29.0-31.0mm | #102.5 Reverse | #O-6/8mm | #5EJ15-4th | #40 | #2.5 | 1 3/4 |
| S3, S3A | S3 | Mikuni VM26SC | Primary | 24.5-26.5mm | 26.0-28.0mm | #85 Reverse | #O-2/4mm | #4EJ4-3rd | #22.5 | #2.0 | 1 3/4 |
| KH400 | KH4 | Mikuni VM26SC | Primary | 24.5-26.5mm | 26.0-28.0mm | #77.5 Reverse | #O-6/4mm | #4EJ4-3rd | #20 | #2.5 | 1 1/4 |
| S2 | S2J1 | Mikuni VM24SC | Primary | 25.5-27.5mm | 27.0-29.0mm | #85 Reverse | #O-2/4mm | #4EJ3-3rd | #25 | #2.0 | 1 1/2 |
| S2A | S2U-0 | Mikuni VM24SC | Primary | 24.5-26.5mm | 26.0-28.0mm | #85 Reverse | #O-2/4mm | #43J4-3rd | #25 | #2.0 | 1 1/2 |
| S1A, S1B | S1U | Mikuni VM22SC | Primary | 24.0-26.0mm | 27.0-29.0mm | #75 Reverse | #O-2 | #4EJ9-3rd | #17.5 | #2.5 | 1 1/4 |
| S1C, KH-A5 | S1U-1 | Mikuni VM22SC | Primary | 24.0-26.0mm | 27.0-29.0mm | #75 Reverse | #O-2/4mm | #4EJ9-3rd | #20 | #2.5 | 1 1/2 |
| KH-B1 | S1E-1 | Mikuni VM22SC | Primary | 24.0-26.0mm | 27.0-29.0mm | #67.5 Reverse | #O-2/4mm | #4EJ9-3rd | #20 | #2.5 | 1 1/2 |