Yamaha Phazer PZ50X 2008, Supplementary Service Manual

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41
SPEC
MAINTENANCE SPECIFICATIONS
Valves, valve seats, valve guides:
Valve clearance (cold)
Intake 0.11 ~ 0.20 mm (0.0043 ~ 0.0079 in)
Exhaust 0.21 ~ 0.25 mm (0.0083 ~ 0.0098 in)
Valve dimensions
Valve head diameter A
Intake 23.4 ~ 23.6 mm (0.9213 ~ 0.9291 in)
Exhaust 24.9 ~ 25.1 mm (0.9803 ~ 0.9882 in)
Valve face width B
Intake 1.76 ~ 2.90 mm (0.0693 ~ 0.1142 in)
Exhaust 1.76 ~ 2.90 mm (0.0693 ~ 0.1142 in)
Valve seat width C
Intake 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in)
Exhaust 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in)
Valve margin thickness D
Intake 0.5 ~ 0.9 mm (0.0197 ~ 0.0354 in)
Exhaust 0.5 ~ 0.9 mm (0.0197 ~ 0.0354 in)
Valve stem diameter
Intake 3.975 ~ 3.990 mm (0.1565 ~ 0.1571 in)
<Limit> 3.945 mm (0.1553 in)
Exhaust 3.960 ~ 3.975 mm (0.1559 ~ 0.1565 in)
<Limit> 3.930 mm (0.1547 in)
Valve guide inside diameter
Intake 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in)
<Limit> 4.050 mm (0.1594 in)
Exhaust 4.000 ~ 4.012 mm (0.1575 ~ 0.1580 in)
<Limit> 4.050 mm (0.1594 in)
Valve-stem-to-valve-guide clearance
Intake 0.010 ~ 0.037 mm (0.0004 ~ 0.0015 in)
<Limit> 0.08 mm (0.0031 in)
Exhaust 0.025 ~ 0.052 mm (0.0010 ~ 0.0020 in)
<Limit> 0.10 mm (0.0039 in)
Valve stem runout limit 0.01 mm (0.0004 in)
Valve seat width
Intake 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in)
<Limit> 1.6 mm (0.0630 in)
Exhaust 0.9 ~ 1.1 mm (0.0354 ~ 0.0433 in)
<Limit> 1.6 mm (0.0630 in)
Model PZ50/PZ50GT/PZ50RT/PZ50MT/PZ50VT/PZ50MP
A
B
C
D