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2-5
SPEC
MAINTENANCE SPECIFICATIONS
Part to be tightened Thread size Q'ty
Tightening torque
Nm m•kg ft•lb
Spark plug M14 × 1.25 1 20 2.0 14
Cylinder head (nut) M 8 × 1.25 5 28 2.8 20
(stud) M 8 × 1.25 5 13 1.3 9.4
Cylinder (nut) M 8 × 1.25 4 30 3.0 22
(stud) M10 × 1.25 4 13 1.3 9.4
Power valve:
Cover M 5 × 0.8 4 4 0.4 2.9
Link lever M 4 × 0.7 1 4 0.4 2.9
Holder (power valve) M 5 × 0.8 4 8 0.8 5.8
Push rod M 5 × 0.8 1 5 0.5 3.6
Thrust plate M 5 × 0.8 1 4 0.4 2.9
Governor fork M 4 × 0.7 2 5 0.5 3.6
Housing M 5 × 0.8 4 5 0.5 3.6
Impeller M 8 × 1.25 1 14 1.4 10
Water pump housing cover M 6 × 1.0 4 10 1.0 7.2
Coolant drain bolt M 6 × 1.0 1 10 1.0 7.2
Radiator hose clamp M 6 × 1.0 8 1 0.1 0.7
Air filter element M 6 × 1.0 1 2 0.2 1.4
Carburetor joint M 6 × 1.0 4 10 1.0 7.2
Air filter case M 6 × 1.0 2 4 0.4 2.9
Air filter joint M 5 × 0.8 5 1 0.1 0.7
Read valve M 3 × 0.5 6 1 0.1 0.7
Crankcase M 6 × 1.0 12 14 1.4 10
Crankcase cover (right) M 6 × 1.0 8 10 1.0 7.2
Crankcase cover (left) M 6 × 1.0 5 5 0.5 3.6
Chain cover M 6 × 1.0 2 5 0.5 3.6
Bearing plate cover M 6 × 1.0 3 10 1.0 7.2
Holder M 6 × 1.0 1 10 1.0 7.2
Oil check bolt M 6 × 1.0 1 10 1.0 7.2
Oil drain bolt M12 × 1.5 1 20 2.0 14
Kick starter M 6 × 1.0 1 10 1.0 7.2
Cluch cover M 6 × 1.0 6 10 1.0 7.2
Primary drive gear M10 × 1.25 1 55 5.5 40
Clutch boss M16 × 1.0 1 80 8.0 58
Clutch spring M 6 × 1.0 5 10 1.0 7.2
Push lever axle M 6 × 1.0 1 7 0.7 5.1
Drive sprocket M16 × 1.0 1 60 6.0 43
Shift pedal M 6 × 1.0 1 10 1.0 7.2
Bearing plate cover (shift cam) M 6 × 1.0 2 10 1.0 7.2
Shift guide M 6 × 1.0 2 10 1.0 7.2
Stopper lever M 6 × 1.0 1 10 1.0 7.2
Segment M 8 × 1.25 1 30 3.0 22
5MV-9-10-2 6/12/00 7:23 PM Page 2-5