Yamaha WR45OFR service manual Seat Width

MAINTENANCE SPECIFICATIONS

SPEC

			Item		Standard		Limit
Cam chain:
Cam chain type/No. of links					98XRH2010-118M/118		----
Cam chain adjustment method					Automatic		----
Valve, valve seat, valve guide:
Valve clearance (cold)				IN	0.10 ~ 0.15 mm		----
					(0.0039 ~ 0.0059 in)
				EX	0.20 ~ 0.25 mm		----
					(0.0079 ~ 0.0098 in)
Valve dimensions:
				B	C
		A			Seat Width		D
						Margin Thickness
	Head Diameter			Face Width

“A” head diameter	IN
	EX
“B” face width	IN
	EX
“C” seat width	IN
	EX
“D” margin thickness	IN
	EX
Stem outside diameter	IN
	EX
Guide inside diameter	IN
	EX
Stem-to-guide clearance	IN
	EX
Stem runout limit

26.9~ 27.1 mm (1.0591 ~ 1.0669 in)

27.9~ 28.1 mm (1.0984 ~ 1.1063 in)

2.26mm (0.089 in)

2.26mm (0.089 in)

0.9~ 1.1 mm (0.0354 ~ 0.0433 in)

0.9~ 1.1 mm (0.0354 ~ 0.0433 in) 1 mm (0.0394 in)

1 mm (0.0394 in)

4.475 ~ 4.490 mm

(0.1762 ~ 0.1768 in)

4.965 ~ 4.980 mm

(0.1955 ~ 0.1961 in)

4.500 ~ 4.512 mm

(0.1772 ~ 0.1776 in)

5.000 ~ 5.012 mm

(0.1969 ~ 0.1973 in)

0.010 ~ 0.037 mm

(0.0004 ~ 0.0015 in)

0.020 ~ 0.047 mm

(0.0008 ~ 0.0019 in)

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1.6mm (0.0630 in)

1.6mm (0.0630 in)

0.85mm (0.033 in)

0.85mm (0.033 in) 4.445 mm (0.1750 in) 4.935 mm (0.1943 in) 4.550 mm (0.1791 in) 5.050 mm (0.1988 in)

0.08mm (0.003 in)

0.10mm (0.004 in)

0.01mm

(0.0004 in)

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