Coming Soon!
Coming Soon... promise!!
Comprehensive Online Parts Manual - MC16 | MC21 | MC28
Stock NSR250 jet settings.
 MC16:
 Venturi Diameter
28mm
 Carburettor Type
TA10A
 Float Height
13mm
 Main Jet
#110
 Slow Jet
#38
 Needle
No.1   2QY
No.2   2QZ
 Idle Speed
1,200 100rpm
 Throttle Cable Free Play
2 - 6mm
 Air Screw Position
1½ Turns out from fully closed
 MC18 (R2J/R4J):
 Venturi Diameter
32mm
 Carburettor 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
 MC18R / MC18R SP (R5K/R6K):
 Carburettor Type
TA21A
 Main Jet
#128
 Needle
No.1    BPG
No.2    BPH
 Power Jet
#75
 Air Screw Position
2 Turns out from fully closed
 MC21R / *MC21R SE/SP (L,*N):
 Carburettor Type
TA22       |   *TA22B
 Main Jet
#128
 Needle
No.1    J81E  |  *J3LB
No.2    J81E  |  *J3LC
 Power Jet
No.1    #72
No.2    #75
 Slow Jet
*#38
 Air Screw Position
1      |    *1½
 Idle Speed
1,250 100rpm
 MC28R / *MC28R SE/SP(R,*S/T):
 Carburettor Type 
TB10A     |   *TB10B
 Main Jet
#140
 Needle
16135-KV3-950
16131-KV3-950
 Power Jet
No.1    #75
No.2    #80
 Slow Jet  
#38
 Air Screw Position
No data available
 Idle Speed
1,250 100rpm
©2005 Back to the NSR250 Technical Resource Index