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

 

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