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TIGHTENING TORQUES
Flange bolts - cylinder-head M 8 35 Nm
Nuts-cylinder base M 10 35 Nm
Flywheel collar nut M 12x1 60 Nm
Nut for primary sprocket (LH thread) M 18x1.5 Loctite 243 + 150 Nm
Nut for inner clutch hub M 18x1.5 Loctite 243 + 100 Nm
Crankcase and cover bolts M 6 8 Nm
Swingarm pivot M 16x1.5 100 Nm
Flat head screw release plate kickstarter M 6x16 Loctite 648 + 19 Nm
Other screws M 6 10 Nm
M 8 25 Nm
M 10 45 Nm
BASIC CARBURETOR SETTING
Carburetor
Carburetor setting number
Main jet
Idling jet
Starting jet
Jet needle
Needle position from top
Slide
Air adjustment screw open
Performance restrictor
Power jet nozzle
250SX
Keihin PWK 38 S AG
180303
165 (162,168)
40 (38)
85
NOZG (NOZH/NOZF)
IV
6,5
1
–
–
250 EXC USA
300 MXC, EXC USA
Keihin PWK 36 S AG
191102
160 (162)
35
85
N3EH (N3EW)
III
7
1
–
–
Keihin PWK 36 S AG
171102
160 (162)
35
85
N3CJ (N3EW/N3EH)
I
7
3,5
slide stop
38 mm
–
250/300 EXC-EU
250/300 EXC-AUS