Base settings are for the MC16. Where settings are unchanged, use the data from the preceding model.
MC16
Venturi Diameter | 28mm | |
Type | TA10A | |
Float Height | 13mm | |
Main Jet | #110 | |
Slow Jet | #38 | |
Needle | No.1 2QY | No.2 2QZ |
Idle Speed | 1200 ± 100rpm | |
Throttle Free Play | 2~6mm | |
Air Screw Position | 1½ Turns out from fully closed |
MC18 R2J/R4J [Mk1]
Venturi Diameter | 32mm | |
Type | TA20A | |
Main Jet | No.1 #130 | No.2 132 |
Needle | No.1 BPD | No.2 BPE |
Power Jet | No.1 #75 | No.2 #70 |
Air Screw Position | 2 Turns out from fully closed |
MC18 R5K/R6K [Mk2]
Type | TA21A | |
Main Jet | #128 | |
Needle | No.1 BPG | No.2 BPH |
Power Jet | #75 | |
Air Screw Position | 2 Turns out from fully closed |
MC21
Type | TA22 | *TA22B | ||
Main Jet | #128 | |||
Slow Jet | #38 | |||
Power Jet | No.1 #72 | No.2 #75 | ||
Needle | No.1 J81E | No.2 2QZ | No.1 *J3LB | No.2 *J3LC |
Idle Speed | 1250 ± 100rpm | |||
Air Screw Position | 1 | *1½ |
MC28
Type | TB10A | *TB10B |
Main Jet | #140 | |
Slow Jet | #38 | |
Needle | 16135-KV3-950 | 16131-KV3-950 |
Idle Speed | 1250 ± 100rpm | |
Air Screw Position | No data available |