Yamaha 2007 XP500 Service Manual page 41

Camshaft runout limit
Timing chain
Model/number of links
Tensioning system
Valve, valve seat, valve guide
Valve clearance (cold)
Intake
Exhaust
Valve dimensions
Valve head diameter A (intake)
Valve head diameter A (exhaust)
Valve face width B (intake)
Valve face width B (exhaust)
Valve seat width C (intake)
Limit
Valve seat width C (exhaust)
Limit
Valve margin thickness D (intake)
Valve margin thickness D (exhaust)
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
Limit
Valve guide inside diameter (intake)
Limit
Valve guide inside diameter (exhaust)
Limit
A
B
C
D
ENGINE SPECIFICATIONS
0.030 mm (0.0012 in)
SCR-0409 SV/132
Automatic
0.15–0.20 mm (0.0059–0.0079 in)
0.25–0.30 mm (0.0098–0.0118 in)
24.90–25.10 mm (0.9803–0.9882 in)
21.90–22.10 mm (0.8622–0.8701 in)
1.140–1.980 mm (0.0449–0.0780 in)
1.140–1.980 mm (0.0449–0.0780 in)
0.90–1.10 mm (0.0354–0.0433 in)
1.6 mm (0.06 in)
0.90–1.10 mm (0.0354–0.0433 in)
1.6 mm (0.06 in)
0.60–0.80 mm (0.0236–0.0315 in)
0.60–0.80 mm (0.0236–0.0315 in)
3.975–3.990 mm (0.1565–0.1571 in)
3.945 mm (0.1553 in)
3.960–3.975 mm (0.1559–0.1565 in)
3.930 mm (0.1547 in)
4.000–4.012 mm (0.1575–0.1580 in)
4.050 mm (0.1594 in)
4.000–4.012 mm (0.1575–0.1580 in)
4.050 mm (0.1594 in)
2-4