Yamaha WR45OFR service manual Part to be tightened Thread size ’ty Tightening torque

MAINTENANCE SPECIFICATIONS

SPEC

Part to be tightened		Thread size		Q’ty	Tightening torque
					Nm	m·kg	ft·lb
Spark plug		M10S ⋅ 1.0		1	13	1.3	9.4
Camshaft cap		M6	⋅ 1.0	10	10	1.0	7.2
Cylinder head blind plug screw		M12 ⋅ 1.0		1	37	3.7	27
Cylinder head (stud bolt)		M6	⋅ 1.0	2	7	0.7	5.1
		M8 ⋅ 1.25		1	15	1.5	11
(bolt)		M10	⋅ 1.25	4	Refer to NOTE.*1
(nut)		M6	⋅ 1.0	2	10		7.2
						1.0
Cylinder head cover		M6	⋅ 1.0	2	10	1.0	7.2
Cylinder		M6	⋅ 1.0	1	10	1.0	7.2
Timing chain tensioner		M6	⋅ 1.0	2	10	1.0	7.2
Tensioner cap bolt		M6	⋅ 1.0	1	7	0.7	5.1
Timing chain guide (rear)		M6	⋅ 1.0	2	10	1.0	7.2
Exhaust pipe (nut)		M8 ⋅ 1.25		1	13	1.3	9.4
(bolt)		M8 ⋅ 1.25		1	24	2.4	17
Silencer		M8 ⋅ 1.25		2	35	3.5	25
Silencer clamp		M8 ⋅ 1.25		1	20	2.0	14
Exhaust pipe protector		M6	⋅ 1.0	3	10	1.0	7.2
Spark arrester (for USA)		M6	⋅ 1.0	3	10	1.0	7.2
Silencer end pipe (for USA)		M6	⋅ 1.0	1	10	1.0	7.2
Carburetor joint clamp (cylinder head side)		M5	⋅ 0.8	1	3	0.3	2.2
Carburetor joint clamp (carburetor side)		M4	⋅ 0.7	1	3	0.3	2.2
Air filter case		M6	⋅ 1.0	2	8	0.8	5.8
Air filter joint clamp		M6	⋅ 1.0	1	3	0.3	2.2
Air filter joint and air filter case		M5	⋅ 0.8	1	4	0.4	2.9
Throttle cable (pull)		M6	⋅ 1.0	1	4	0.4	2.9
Throttle cable (return)		M12 ⋅ 1.0		1	11	1.1	8.0
Throttle cable cover		M5	⋅ 0.8	2	4	0.4	2.9
Hot starter plunger		M12 ⋅ 1.0		1	2	0.2	1.4
Radiator panel (upper)		M6	⋅ 1.0	2	10	1.0	7.2
Radiator		M6	⋅ 1.0	6	10	1.0	7.2
Radiator hose clamp		M6	⋅ 1.0	8	2	0.2	1.4
Radiator pipe 1, 2		M10 ⋅ 1.0		2	10	1.0	7.2
Impeller		M8 ⋅ 1.25		1	14	1.4	10
Water pump housing cover		M6	⋅ 1.0	3	10	1.0	7.2
Coolant drain bolt		M6	⋅ 1.0	1	10	1.0	7.2
Oil pump cover		M4	⋅ 0.7	1	2	0.2	1.4
Oil pump		M6	⋅ 1.0	3	10	1.0	7.2
Engine oil drain bolt (oil filter)		M6	⋅ 1.0	1	10	1.0	7.2
Oil filter cover		M6	⋅ 1.0	2	10	1.0	7.2
Oil delivery pipe 1		M10	⋅ 1.25	1	20	2.0	14
		M8 ⋅ 1.25		2	18	1.8	13
Oil delivery pipe 2		M6	⋅ 1.0	1	10	1.0	7.2
Oil hose		M6	⋅ 1.0	2	10	1.0	7.2
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