Yamaha YZF-R7 Owner's Service Manual page 44

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Item
Valve stem runout
Valve seat width
Intake
Exhaust
Valve springs
Inner spring
Free length
Intake
Exhaust
Installed length (valve closed)
Intake
Exhaust
Compressed spring force
(installed)
Intake
Exhaust
Spring tilt
Intake
Exhaust
Winding direction (top view)
Intake
Exhaust
ENGINE SPECIFICATIONS
Standard
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0.9 ~ 1.1 mm (0.035 ~ 0.043 in)
0.9 ~ 1.1 mm (0.035 ~ 0.043 in)
32.35 mm (1.27 in)
28.82 mm (1.13 in)
27.96 mm (1.10 in)
24.6 mm (0.97 in)
101 ~ 117 N
(10.30 ~ 11.93 kgf, 22.7 ~ 26.3 lb)
106 ~ 122 N
(10.81 ~ 12.44 kgf, 23.8 ~ 27.4 lb)
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Counter clockwise
Counter clockwise
2 - 6
SPEC
Limit
0.01 mm
(0.0004 in)
1.6 mm
(0.06 in)
1.6 mm
(0.06 in)
30.73 mm
(1.21 in)
27.37 mm
(1.08 in)
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2.5˚ /1.4 mm
(2.5˚/0.055 in)
2.5˚ /1.3 mm
(2.5˚/0.051 in)
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