Engine Tightening Torques - Yamaha YFM70RY Service Manual

EAS20340

ENGINE TIGHTENING TORQUES

Item
Cylinder head stud bolt (exhaust
pipe)
Cylinder head bolt
Cylinder head bolt
Cylinder head bolt
Spark plug
Oil gallery union bolt
Tappet cover bolt
Camshaft sprocket cover bolt
Camshaft sprocket bolt
Decompressor assembly bolt
Cylinder bolt
Cylinder bolt
Cable guide bolt
Water jacket joint bolt
AC magneto rotor nut
AC magneto cover bolt
Balancer driven gear nut
Breather plate bolt
Primary drive gear nut
Valve adjusting screw nut
Camshaft bearing retainer bolt
Timing chain guide bolt (intake
side)
Timing chain tensioner cap bolt
Timing chain tensioner bolt
Water pump outlet hose clamp
screw
Water pump bolt
Water pump housing cover bolt
Thermostat cover bolt
Radiator bolt
Engine oil drain bolt (crankcase)
Thread
Q'ty
size
M8 4
M9 4
M9 2
M6 2
M10 1 13 Nm (1.3 m·kg, 9.4 ft·lb)
M8 1
M6 8
M6 2
M7 2
M7 2
M10 4
M6 2
M6 1
M6 2
M16 1
M6 14
M16 2
M6 3
M20 1 110 Nm (11 m·kg, 80 ft·lb)
M6 4
M6 2
M6 2
M16 1
M6 2
M4 2
M6 3
M6 3
M6 2
M6 2
M14 1
2-16
TIGHTENING TORQUES
Tightening torque
15 Nm (1.5 m·kg, 11 ft·lb)
35 Nm (3.5 m·kg, 25 ft·lb)
38 Nm (3.8 m·kg, 27 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
20 Nm (2 m·kg, 14 ft·lb)
20 Nm (2 m·kg, 14 ft·lb)
50 Nm (5 m·kg, 36 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
7 Nm (0.7 m·kg, 5.1 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
60 Nm (6 m·kg, 43 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
60 Nm (6 m·kg, 43 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
14 Nm (1.4 m·kg, 10 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
20 Nm (2 m·kg, 14 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
2 Nm (0.2 m·kg, 1.4 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
11 Nm (1.1 m·kg, 8 ft·lb)
10 Nm (1 m·kg, 7.2 ft·lb)
7 Nm (0.7 m·kg, 5.1 ft·lb)
23 Nm (2.3 m·kg, 17 ft·lb)
Remarks
M
E
See TIP.
E
E
Use a
lock
washer.
E
Use a
lock
washer.
M
LT