Yamaha FZS6W Service Manual page 27

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)
Limit
Valve margin thickness D (exhaust)
Limit
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
Limit
Valve guide inside diameter (intake)
Limit
Valve guide inside diameter (exhaust)
Limit
Valve-stem-to-valve-guide clearance (intake)
Limit
Valve-stem-to-valve-guide clearance (exhaust)
Limit
Valve stem runout
Cylinder head valve seat width (intake)
Limit
Cylinder head valve seat width (exhaust)
ENGINE SPECIFICATIONS
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)
0.5 mm (0.02 in)
0.60–0.80 mm (0.0236–0.0315 in)
0.5 mm (0.02 in)
3.975–3.990 mm (0.1565–0.1571 in)
3.950 mm (0.1555 in)
3.960–3.975 mm (0.1559–0.1565 in)
3.935 mm (0.1549 in)
4.000–4.012 mm (0.1575–0.1580 in)
4.042 mm (0.1591 in)
4.000–4.012 mm (0.1575–0.1580 in)
4.042 mm (0.1591 in)
0.010–0.037 mm (0.0004–0.0015 in)
0.080 mm (0.0032 in)
0.025–0.052 mm (0.0010–0.0020 in)
0.100 mm (0.0039 in)
0.040 mm (0.0016 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)
2-4