Engine Tightening Torques - Yamaha 2009 YFM25RY Service Manual

EAS20340

ENGINE TIGHTENING TORQUES

Item
Cylinder head bolt (upper)
Cylinder head bolt
Camshaft lock plate bolt
Cylinder head side cover bolt (1 and 2)
Cylinder head side cover bolt 3
Cylinder head breather plate bolt
Spark plug
Cylinder head stud bolt
Oil gallery bolt
Carburetor joint bolt
Plate 2 bolt
Cylinder bolt
Pickup coil rotor bolt
Balancer weight gear nut
Valve clearance adjusting locknut
Camshaft sprocket bolt
Timing chain tensioner bolt
Timing chain tensioner cap bolt
Timing chain guide bolt (intake side)
Oil filter element cover bolt
Oil delivery pipe and right crankcase
cover union bolt
Oil delivery pipe and cylinder union bolt
Oil pump assembly screw
Carburetor joint clamp screw (front)
Carburetor joint clamp screw (rear)
Exhaust pipe nut
Muffler joint bolt
Muffler bolt
Right crankcase cover bolt
Left crankcase cover bolt
Crankcase bolt
Crankcase nut
AC magneto lead clamp bolt
Engine oil drain bolt
Ground lead, clutch cable holder bolt
Neutral switch lead clamp bolt
Starter idle gear cover bolt
Starter clutch bolt
TIGHTENING TORQUES
Thread
Q'ty Tightening torque
size
M8 4 24 Nm (2.4 m·kg, 18 ft·lb)
M8 2 20 Nm (2.0 m·kg, 15 ft·lb)
M6 2 8 Nm (0.8 m·kg, 5.9 ft·lb)
M55 2 18 Nm (1.8 m·kg, 13 ft·lb)
M6 2 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 2 10 Nm (1.0 m·kg, 7.4 ft·lb)
M12 1 18 Nm (1.8 m·kg, 13 ft·lb)
M8 2 15 Nm (1.5 m·kg, 11 ft·lb)
M6 1 6 Nm (0.6 m·kg, 4.4 ft·lb)
M6 2 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 2 12 Nm (1.2 m·kg, 8.9 ft·lb)
M6 2 10 Nm (1.0 m·kg, 7.4 ft·lb)
M10 1 60 Nm (6.0 m·kg, 44 ft·lb)
M12 1 55 Nm (5.5 m·kg, 41 ft·lb)
M6 2 14 Nm (1.4 m·kg, 10 ft·lb)
M10 1 60 Nm (6.0 m·kg, 44 ft·lb)
M6 2 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 1 8 Nm (0.8 m·kg, 5.9 ft·lb)
M6 2 8 Nm (0.8 m·kg, 5.9 ft·lb)
M6 3 10 Nm (1.0 m·kg, 7.4 ft·lb)
M10 1 20 Nm (2.0 m·kg, 15 ft·lb)
M8 1 17 Nm (1.7 m·kg, 13 ft·lb)
M6 3 6 Nm (0.6 m·kg, 4.4 ft·lb)
M4 2 4 Nm (0.4 m·kg, 3.0 ft·lb)
M4 1 4 Nm (0.4 m·kg, 3.0 ft·lb)
M8 2 18 Nm (1.8 m·kg, 13 ft·lb)
M8 1 20 Nm (2.0 m·kg, 15 ft·lb)
M8 2 34 Nm (3.4 m·kg, 25 ft·lb)
M6 13 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 9 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 12 10 Nm (1.0 m·kg, 7.4 ft·lb)
M10 1 40 Nm (4.0 m·kg, 30 ft·lb)
M5 1 7 Nm (0.7 m·kg, 5.2 ft·lb)
M12 1 20 Nm (2.0 m·kg, 15 ft·lb)
M6 1 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 1 10 Nm (1.0 m·kg, 7.4 ft·lb)
M6 3 10 Nm (1.0 m·kg, 7.4 ft·lb)
M8 3 30 Nm (3.0 m·kg, 22 ft·lb)
2-15
Remarks
See TIP
E
M
LT
LT
Use a lock
washer.
LT
LT
LT
LT