Yamaha YZF-R1 98 Service Manual page 25

Item
Timing chain
M odel/num ber of links
Tensioning system
Valves, valve seats, valve guides
Valve clearance (cold)
Intake
Exhaust
Valve dim ensions
A
Head Diameter
Valve head diam eter A
Intake
Exhaust
Valve face w idth B
Intake
Exhaust
Valve seat w idth C
Intake
Exhaust
Valve m argin thickness D
Intake
Exhaust
Valve stem diam eter
Intake
Exhaust
Valve guide inside diam eter
Intake
Exhaust
Valve-stem -to-valve-guide clear-
ance
Intake
Exhaust
Valve stem runout
Valve seat w idth
Intake
Exhaust
ENGINE SPECIFICATIONS
RH2015 / 130
Autom atic
0.11 ~ 0.20 m m
0.21 ~ 0.30 m m
B
Face Width
22.9 ~ 23.1 m m
24.4 ~ 24.6 m m
1.76 ~ 2.90 m m
1.76 ~ 2.90 m m
0.9 ~ 1.1 m m
0.9 ~ 1.1 m m
0.5 ~ 0.9 m m
0.5 ~ 0.9 m m
3.975 ~ 3.900 m m
4.460 ~ 4.475 m m
4.000 ~ 4.012 m m
4.500 ~ 4.512 m m
0.010 ~ 0.037 m m
0.025 ~ 0.052 m m
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0.9 ~ 1.1 m m
0.9 ~ 1.1 m m
2 - 5
Standard
C
Seat Width
SPEC
Lim it
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D
Margin Thickness
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3.945 m m
4.43 m m
4.05 m m
4.55 m m
0.08 m m
0.1 m m
0.01 m m
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