Yamaha WR45OFR service manual Maintenance Specifications, Engine

MAINTENANCE SPECIFICATIONS

MAINTENANCE SPECIFICATIONS

ENGINE

SPEC

	Item	Standard	Limit
Cylinder head:
Warp limit		----	0.05 mm
			(0.002 in)

Cylinder:
Bore size		95.00 ~ 95.01 mm	----
		(3.7402 ~ 3.7406 in)
Out of round limit	----		0.05 mm
			(0.002 in)
Camshaft:
Drive method		Chain drive (Left)	----
Camshaft cap inside diameter		22.000 ~ 22.021 mm	----
		(0.8661 ~ 0.8670 in)
Camshaft journal diameter		21.967 ~ 21.980 mm	----
		(0.8648 ~ 0.8654 in)
Shaft-to-cap clearance		0.020 ~ 0.054 mm	0.08 mm
		(0.0008 ~ 0.0021 in)	(0.003 in)
Cam dimensions

A

	B
Intake		“A”		31.200 ~ 31.300 mm	31.100 mm
				(1.2283 ~ 1.2323 in)	(1.2244 in)
		“B”		22.550 ~ 22.650 mm	22.450 mm
				(0.8878 ~ 0.8917 in)	(0.8839 in)
Exhaust		“A”		30.950 ~ 31.050 mm	30.850 mm
				(1.2185 ~ 1.2224 in)	(1.2146 in)
		“B”		22.494 ~ 22.594 mm	22.394 mm
				(0.8856 ~ 0.8895 in)	(0.8817 in)
Camshaft runout limit			----		0.03 mm
					(0.0012 in)

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