Yamaha Grizzly550 User Manual page 34

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)
Cylinder head valve seat width (exhaust)
Valve spring
Free length (intake)
Limit
Free length (exhaust)
Limit
Installed length (intake)
Installed length (exhaust)
B
C
D
2-5
ENGINE SPECIFICATIONS
2.26 mm (0.0890 in)
1.00–1.20 mm (0.0394–0.0472 in)
1.60 mm (0.0630 in)
1.00–1.20 mm (0.0394–0.0472 in)
1.60 mm (0.0630 in)
0.80–1.20 mm (0.0315–0.0472 in)
0.4 mm (0.02 in)
0.80–1.20 mm (0.0315–0.0472 in)
0.4 mm (0.02 in)
5.975–5.990 mm (0.2352–0.2358 in)
5.945 mm (0.2341 in)
5.960–5.975 mm (0.2346–0.2352 in)
5.930 mm (0.2335 in)
6.000–6.012 mm (0.2362–0.2367 in)
6.050 mm (0.2382 in)
6.000–6.012 mm (0.2362–0.2367 in)
6.050 mm (0.2382 in)
0.010–0.037 mm (0.0004–0.0015 in)
0.080 mm (0.0031 in)
0.025–0.052 mm (0.0010–0.0020 in)
0.100 mm (0.0039 in)
0.040 mm (0.0016 in)
1.00–1.20 mm (0.0394–0.0472 in)
1.00–1.20 mm (0.0394–0.0472 in)
40.38 mm (1.59 in)
38.36 mm (1.51 in)
40.38 mm (1.59 in)
38.36 mm (1.51 in)
35.00 mm (1.38 in)
35.00 mm (1.38 in)