Yamaha YZF-R15, Service Manual

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2-15
TIGHTENING TORQUES
TIGHTENING TORQUES
GENERAL TIGHTENING TORQUE
SPECIFICATIONS
This chart specifies tightening torques for
standard fasteners with a standard ISO thread
pitch. Tightening torque specifications for special
components or assemblies are provided for each
chapter of this manual. To avoid warpage, tighten
multi-fastener assemblies in a crisscross pattern
and progressive stages until the specified
tightening torque is reached. Unless otherwise
specified, tightening torque specifications require
clean, dry threads. Components should be at
room temperature.
2-16
TIGHTENING TORQUES
A. Distance between flats
B. Outside thread diameter
A (nut) B (bolt)
General tightening
torques
Nm m·kg ft·lb
10 mm 6 mm 6 0.6 4.3
12 mm 8 mm 15 1.5 11
14 mm 10 mm 30 3.0 22
17 mm 12 mm 55 5.5 40
19 mm 14 mm 85 8.5 61
22 mm 16 mm 130 13.0 94
ENGINE TIGHTENING TORQUES
Item
Thread
size
Q ty Tightening torque Remarks
Cylinder head bolt M8 4 22 Nm (2.2 m·kg, 16 ft·lb)
Cylinder head bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Spark plug M10 1 13 Nm (1.3 m·kg, 9.4 ft·lb)
Cylinder head cover bolt M6 5 10 Nm (1.0 m·kg, 7.2 ft·lb)
Air cut-off valve assembly bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Oil check bolt M6 1 7 Nm (0.7 m·kg, 5.1 ft·lb)
Cylinder head stud bolt (exhaust
pipe)
M8 2 15 Nm (1.5 m·kg, 11 ft·lb)
Coolant drain bolt M6 1 7 Nm (0.7 m·kg, 5.1 ft·lb)
Balancer driven gear nut M10 1 50 Nm (5.0 m·kg, 36 ft·lb)
Valve adjusting screw locknut M5 4 7 Nm (0.7 m·kg, 5.1 ft·lb)
Camshaft sprocket bolt M8 1 30 Nm (3.0 m·kg, 22 ft·lb)
Camshaft retainer bolt M6 2 7 Nm (0.7 m·kg, 5.1 ft·lb)
Timing chain guide bolt M6 1 10 Nm (1.0 m ·kg, 7.2 ft·lb)
Timing chain tensioner bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Yamaha
bond No.
1215
(Three
bond
1215®)
Water pump assembly bolt M6 3 10 Nm (1.0 m·kg, 7.2 ft·lb)
Water pump housing cover bolt M6 4 10 Nm (1.0 m·kg, 7.2 ft·lb)
Impeller shaft retainer bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Thermostat cover bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Oil pump assembly screw M5 2 4 Nm (0.4 m·kg, 2.9 ft·lb)
Engine oil drain plug M35 1 32 Nm (3.2 m·kg, 23 ft·lb)
Oil filter element cover bolt M6 3 10 Nm (1.0 m·kg, 7.2 ft·lb)
Oil baffle plate bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Intake manifold bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Injector bolt M6 1 12 Nm (1.2 m·kg, 8.7 ft·lb)
Throttle body joint clamp screw M4 2 2 Nm (0.2 m·kg, 1.4 ft·lb)
Air filter case joint clamp screw M4 1 2 Nm (0.2 m·kg, 1.4 ft·lb)
Air filter case bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Resonator bolt M6 2 10 Nm (1.0 m·kg, 7.2 ft·lb)
Locknut (throttle cable) M6 1 7 Nm (0.7 m·kg, 5.1 ft·lb)
Muffler nut M8 2 15 Nm (1.5 m·kg, 11 ft·lb)
Muffler bolt M8 2 20 Nm (2.0 m·kg, 14 ft·lb)
Exhaust pipe protector screw M6 2 8 Nm (0.8 m·kg, 5.8 ft·lb)
E
E
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