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 Float 
Level
Fuel 
Level
Main Jet Size/Type NeedleJet/Primary choke height Jet Needle/Clip Position Pilot Jet Throttle Valve Cutaway
H1 w/o CDI   Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #90 Reverse 194 #O-2 #5EH7-3rd #30 #2.5
H1 w/CDI KA1 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #100 Reverse 194 #O-2 #5GL3-3rd #30 #3.0
H1A KAE-1 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #100 Reverse 194 #O-2 #5GL3-3rd #30 #3.0
H1B KA4 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #95 Reverse 194 #O-4/8mm
194 #O-4 -Euro
#5DJ19-4th #30 #2.0
#2.5 -Euro
H1C KA5 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #100 Reverse 194 #O-2 #5GL3-3rd #30 #3.0
H1D/E KA6 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #92.5 Reverse 172 #O-4/8mm #5DJ19-4th #30 #2.0
H1F KA6 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #90 Reverse 172 #O-4/8mm #5DJ19-3rd #30 #2.0
KH500 KH5 Mikuni VM28SC 23.0-25.0mm 29.0-31.0mm #75 Reverse 172 #O-4/8mm #5DJ19-3rd #25 #2.0
H2 H2 Mikuni VM30SC 23.0-25.0mm 29.0-31.0mm #105 Reverse 171 #O-6/2mm #5FL14-2nd #35 #2.5
H2/A H2-1,H2-2,
H2-4
Mikuni VM30SC 23.0-25.0mm 29.0-31.0mm #97.5 Reverse 171 #O-6/8mm #5EJ15-3rd #35 #2.5
H2B/C H2-5 Mikuni VM30SC 23.0-25.0mm 29.0-31.0mm #102.5 Reverse 171 #O-6/8mm #5EJ15-4th #40 #2.5
S3/A S3 Mikuni VM26SC 24.5-26.5mm 26.0-28.0mm #85 Reverse 220 #O-2/4mm #4EJ4-3rd #22.5 #2.0
KH400 KH4 Mikuni VM26SC 24.5-26.5mm 26.0-28.0mm #77.5  Reverse 220 #O-6/4mm #4EJ4-3rd #20 #2.5
S2 S2J1 Mikuni VM24SC 25.5-27.5mm 27.0-29.0mm #85 Reverse 220 #O-2/4mm #4EJ4-3rd #25 #2.0
S2A S2U-0 Mikuni VM24SC 24.5-26.5mm 26.0-28.0mm #85 Reverse 220 #O-2/4mm #4EJ4-3rd #25 #2.0
S1 S1-1 Mikuni VM22SC 24.0-26.0mm 27.0-29.0mm #75 Reverse        #O-0/4mm #4EJ8-3rd #20 #2.0
S1A/B S1-U Mikuni VM22SC 24.0-26.0mm 27.0-29.0mm #75 Reverse 220 #O-2/4mm #4EJ9-3rd #17.5 #2.5
S1C, KH-A5 S1U-1 Mikuni VM22SC 24.0-26.0mm 27.0-29.0mm #75 Reverse 220 #O-2/4mm #4EJ9-3rd #20 #2.5
KH-B1 S1E-1 Mikuni VM22SC 24.0-26.0mm 27.0-29.0mm #75 Reverse 220 #O-2/4mm #4EJ9-3rd #20 #2.5

Note: 169 O-4/8 fitted with 4/042 Amal main jet and 5DJ14 needle has been installed successfully in an H1D