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TECHNICAL DATA – ENGINE 640 LC4, 640 LC4 SUPERMOTO 2002
Collar nut front axle
M16x1,5
40 Nm
(30ft.lb)
Collar nut rear axle
M20x1,5
80 Nm
(59ft.lb)
Shock absorber top
M10
45 Nm
(33ft.lb)
Shock absorber bottom
M10
45 Nm
(33ft.lb)
Collar screws brake disk front/rear
M6 (10.9)
Loctite 243 + 10 Nm
(7ft.lb)
Screw brake caliper front
M8
Loctite 243 + 25 Nm
(19ft.lb)
Bearing bolt linkage arm/frame
M12
60 Nm
(44ft.lb)
Collar nuts rocker arm bolts
M14x1,5
100 Nm
(74ft.lb)
Engine mounting screw
M10
45 Nm
(33ft.lb)
Ball joint for push rod
M8
Loctite 243 + 25 Nm
(19ft.lb)
Sprocket screws on nuts
M8
Loctite 243 + 35 Nm
(25ft.lb)
Collar nut swingarm bolt
M14x1,5
100 Nm
(74ft.lb)
Clamping screws top triple clamp (USD 43)
M8
20 Nm
(15ft.lb)
Clamping screws bottom triple clamp (USD 43)
M8
15 Nm
(11ft.lb)
Clamping screws fork stubs
M8
10 Nm
(7ft.lb)
Screws handlebar clamp
M8
Loctite 243 + 20 Nm
(15ft.lb)
Allan head screw handle bar support
M10
Loctite 243 + 20 Nm
(15ft.lb)
Spoke nipple
M4
4 Nm
(3ft.lb)
Other screws on chassis
M6
10 Nm
(7ft.lb)
M8
25 Nm
(19ft.lb)
M10
45 Nm
(33ft.lb)
Other collar nuts on chassis
M6
15 Nm
(11ft.lb)
M8
30 Nm
(22ft.lb)
M10
50 Nm
(37ft.lb)
TIGHTENING TORQUES - CHASSIS LC4
BASIC CARBURETOR SETTING
Type
BST40-225
Carb.-setting number
090298
Main jet
142,5
Needle jet
689 X-6
Idling jet
45
Jet needle
6G5
Needle clip pos. f. top
3. from top
Mixt. adj. screw open
2,25
640 LC4
640 LC4 Supermoto
