Yamaha VMAX 2009 Service Manual page 58

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
Valve spring
Outer spring
Free length (intake)
Limit
Free length (exhaust)
Limit
Installed length (intake)
Installed length (exhaust)
Spring rate K1 (intake)
Spring rate K2 (intake)
Spring rate K1 (exhaust)
Spring rate K2 (exhaust)
Installed compression spring force (intake)
Installed compression spring force (exhaust)
Spring tilt (intake)
Spring tilt (exhaust)
Winding direction (intake)
Winding direction (exhaust)
Cylinder
Bore
Taper limit
Out of round limit
ENGINE SPECIFICATIONS
4.975–4.990 mm (0.1959–0.1965 in)
4.945 mm (0.1947 in)
4.960–4.975 mm (0.1953–0.1959 in)
4.930 mm (0.1941 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.050 mm (0.1988 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.050 mm (0.1988 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)
0.010 mm (0.0004 in)
40.78 mm (1.61 in)
38.74 mm (1.53 in)
40.78 mm (1.61 in)
38.74 mm (1.53 in)
33.88 mm (1.33 in)
33.88 mm (1.33 in)
29.00 N/mm (2.96 kgf/mm, 165.59 lb/in)
39.01 N/mm (3.98 kgf/mm, 222.75 lb/in)
29.00 N/mm (2.96 kgf/mm, 165.59 lb/in)
39.01 N/mm (3.98 kgf/mm, 222.75 lb/in)
186.00–214.00 N (18.97–21.82 kgf, 41.81–
48.11 lbf)
186.00–214.00 N (18.97–21.82 kgf, 41.81–
48.11 lbf)
2.5°/1.8 mm
2.5°/1.8 mm
Clockwise
Clockwise
90.000–90.010 mm (3.5433–3.5437 in)
0.050 mm (0.0020 in)
0.050 mm (0.0020 in)
2-5