Engine Tightening Torques - Yamaha YZ250F Owner's Service Manual

ENGINE TIGHTENING TORQUES

EAS1SM5058
TIP
- marked portion shall be checked for torque tightening after break-in or before each race.
ITEM
Camshaft cap bolt
Cylinder head blind plug
Spark plug
Cylinder head stud bolt
Cylinder head stud bolt (exhaust
pipe)
Cylinder head bolts
Cylinder head nuts
Cylinder head cover bolt
Cylinder bolt
Oil pressure check bolt
Balancer weight plate screw
Balancer driven gear nut
Balancer nut
Timing chain guide stopper plate
(exhaust side)
Timing chain tensioner cap bolt
Timing chain tensioner bolt
Coolant drain bolt
Radiator hose clamp screw
Radiator bolt
Radiator pipe bolt
Radiator pipe joint bolt
Water pump housing cover bolt
Oil pump bolt
Oil pump cover screw
Oil strainer bolt
Throttle cable cover bolt
Throttle body joint bolt
Throttle body joint clamp bolt
Air filter joint clamp bolt
Air filter case bolt
Air filter bolt
Air filter guide holder screw
Thread
Q'ty TIGHTENING TORQUES
size
M6 8 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M12 1 28 Nm (2.8 m·kgf, 20 ft·lbf)
M10 1 13 Nm (1.3 m·kgf, 9.4 ft·lbf)
M6 2 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
M8 2 15 Nm (1.5 m·kgf, 11 ft·lbf)
M9 4 33 Nm (3.3 m·kgf, 24 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M14 1 50 Nm (5.0 m·kgf, 36 ft·lbf)
M10 1 38 Nm (3.8 m·kgf, 27 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 6 Nm (0.6 m·kgf, 4.3 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 8 1.5 Nm (0.15 m·kgf, 1.1 ft·lbf)
M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M6 4 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M5 2 5 Nm (0.5 m·kgf, 3.6 ft·lbf)
M4 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
M6 1 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M5 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
M6 2 10 Nm (1.0 m·kgf, 7.2 ft·lbf)
M5 1 3.0 Nm (0.30 m·kgf, 2.2 ft·lbf)
M4 1 3.5 Nm (0.35 m·kgf, 2.5 ft·lbf)
M6 3 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
M6 1 2.0 Nm (0.20 m·kgf, 1.4 ft·lbf)
M5 8 2.5 Nm (0.25 m·kgf, 1.8 ft·lbf)
2-13
TIGHTENING TORQUES
Remarks
LT
M
LT
LT
LT