Engine Tightening Torques - Yamaha YZ125 2021 Owner's Service Manual

EAM30203

ENGINE TIGHTENING TORQUES

TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
Item
Spark plug
Cylinder head nut
Cylinder head stud bolt
Cylinder nut
Cylinder stud bolt
Power valve cover screw
Power valve link lever bolt
Power valve
Push rod bolt
Thrust plate screw
Governor fork screw
Power valve housing bolt
Water pump housing cover bolt
Coolant drain bolt
Radiator bolt
Radiator guard bolt
Radiator hose clamp
Air filter element
Carburetor joint bolt
Carburetor joint clamp
Air filter case joint clamp
Air filter case bolt
Air filter guide clamp
Reed valve screw
Locknut (throttle cable handlebar
side)
Locknut (throttle cable carburetor
side)
Crankcase bolt
Crankcase cover screw (right)
Crankcase cover screw (left)
Drive sprocket cover screw
Bearing plate cover screw
Holder bolt
Thread
Q'ty
size
M14S 1 20 N·m (2.0 kgf·m, 15 lb·ft)
M8 5 28 N·m (2.8 kgf·m, 21 lb·ft)
M8 5 13 N·m (1.3 kgf·m, 9.6 lb·ft)
M8 4 30 N·m (3.0 kgf·m, 22 lb·ft)
M10 4 13 N·m (1.3 kgf·m, 9.6 lb·ft)
M5 4 5 N·m (0.5 kgf·m, 3.7 lb·ft)
M4 1 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
M5 4 8 N·m (0.8 kgf·m, 5.9 lb·ft)
M5 1 4.5 N·m (0.45 kgf·m, 3.3 lb·ft)
M5 1 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
M4 2 5 N·m (0.5 kgf·m, 3.7 lb·ft)
M5 3 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
M6 4 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 6 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 2 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 8 1.5 N·m (0.15 kgf·m, 1.1 lb·ft)
M6 1 2.0 N·m (0.20 kgf·m, 1.5 lb·ft)
M6 4 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M4 1 2.3 N·m (0.23 kgf·m, 1.7 lb·ft)
M4 1 2.3 N·m (0.23 kgf·m, 1.7 lb·ft)
M6 2 8 N·m (0.8 kgf·m, 5.9 lb·ft)
M5 1 3.5 N·m (0.35 kgf·m, 2.6 lb·ft)
M3 6 1.0 N·m (0.10 kgf·m, 0.73 lb·ft)
M8 1 7 N·m (0.7 kgf·m, 5.2 lb·ft)
M6 1 4.0 N·m (0.40 kgf·m, 3.0 lb·ft)
M6 12 14 N·m (1.4 kgf·m, 10 lb·ft)
M6 8 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 4 5 N·m (0.5 kgf·m, 3.7 lb·ft)
M6 2 5 N·m (0.5 kgf·m, 3.7 lb·ft)
M6 4 10 N·m (1.0 kgf·m, 7.4 lb·ft)
M6 1 10 N·m (1.0 kgf·m, 7.4 lb·ft)
2-10
TIGHTENING TORQUES
Tightening torques Remarks

LT
LT