Yamaha YZ125 2016, Owner'S Service Manual

Page: 32 / 166

2-8
TIGHTENING TORQUES
TIGHTENING TORQUES
ENGINE
△
- marked portion shall be checked for torque tightening after break-in or before each race.
Item
Thread
size
Q'ty Tightening torque Remarks
Spark plug M14S 1 20 Nm (2.0 m•kg, 14 ft•lb)
Cylinder head (nut) M8 5 28 Nm (2.8 m•kg, 20 ft•lb)
Copper
washer
Cylinder head (stud) M8 5 13 Nm (1.3 m•kg, 9.4 ft•lb)
Cylinder (nut) M8 4 30 Nm (3.0 m•kg, 22 ft•lb)
Cylinder (stud) M10 4 13 Nm (1.3 m•kg, 9.4 ft•lb)
Power valve:
Cover
M5 4 5 Nm (0.5 m•kg, 3.6 ft•lb) YPVS
Link lever M4 1 4 Nm (0.4 m•kg, 2.9 ft•lb) YPVS
Holder (power valve) M5 4 8 Nm (0.8 m•kg, 5.8 ft•lb) YPVS
Push rod M5 1 5 Nm (0.5 m•kg, 3.6 ft•lb) YPVS
Thrust plate M5 1 4 Nm (0.4 m•kg, 2.9 ft•lb) YPVS
Governor fork M4 2 5 Nm (0.5 m•kg, 3.6 ft•lb) YPVS
Housing M5 3 4 Nm (0.4 m•kg, 2.9 ft•lb) YPVS
Water pump housing cover M6 4 10 Nm (1.0 m•kg, 7.2 ft•lb)
Coolant drain bolt M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Copper
washer
Radiator M6 6 10 Nm (1.0 m•kg, 7.2 ft•lb)
Radiator guard M6 2 10 Nm (1.0 m•kg, 7.2 ft•lb)
Radiator hose clamp M6 8 2 Nm (0.2 m•kg, 1.4 ft•lb)
Air filter element M6 1 2 Nm (0.2 m•kg, 1.4 ft•lb)
Carburetor joint M6 4 10 Nm (1.0 m•kg, 7.2 ft•lb)
Carburetor joint clamp M4 1 2 Nm (0.2 m•kg, 1.4 ft•lb)
Air filter joint clamp M4 1 2 Nm (0.2 m•kg, 1.4 ft•lb)
△
Air filter case M6 2 8 Nm (0.8 m•kg, 5.8 ft•lb)
Air filter guide clamp M5 1 4 Nm (0.4 m•kg, 2.9 ft•lb)
Reed valve M3 6 1 Nm (0.1 m•kg, 0.7 ft•lb)
Throttle cable adjust bolt and locknut M8 1 7 Nm (0.7 m•kg, 5.1 ft•lb)
Throttle cable M6 1 4 Nm (0.4 m•kg, 2.9 ft•lb)
Crankcase M6 12 14 Nm (1.4 m•kg, 10 ft•lb)
Right crankcase cover M6 8 10 Nm (1.0 m•kg, 7.2 ft•lb)
Left crankcase cover M6 4 5 Nm (0.5 m•kg, 3.6 ft•lb)
Drive chain sprocket cover M6 2 5 Nm (0.5 m•kg, 3.6 ft•lb)
Bearing plate cover M6 4 10 Nm (1.0 m•kg, 7.2 ft•lb)
Holder M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Oil check bolt M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Copper
washer
Oil drain bolt M10 1 20 Nm (2.0 m•kg, 14 ft•lb)
Copper
washer
Kickstarter lever M6 1 10 Nm (1.0 m•kg, 7.2 ft•lb)
Clutch cover M6 6 10 Nm (1.0 m•kg, 7.2 ft•lb)