Yamaha 2007 XP500 Service Manual page 42

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)
Limit
Valve 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)
Spring tilt (intake)
Spring tilt (exhaust)
Winding direction (intake)
Winding direction (exhaust)
Valve lifter
Valve lifter outside diameter (intake)
Limit
Valve lifter outside diameter (exhaust)
Limit
Cylinder
Bore
ENGINE SPECIFICATIONS
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)
1.6 mm (0.06 in)
35.59 mm (1.40 in)
33.81 mm (1.33 in)
35.59 mm (1.40 in)
33.81 mm (1.33 in)
30.39 mm (1.20 in)
30.39 mm (1.20 in)
18.84 N/mm (107.60 lb/in) (1.92 kgf/mm)
24.52 N/mm (140.01 lb/in) (2.50 kgf/mm)
18.84 N/mm (107.60 lb/in) (1.92 kgf/mm)
24.52 N/mm (140.01 lb/in) (2.50 kgf/mm)
2.5 °/1.6 mm
2.5 °/1.6 mm
Clockwise
Clockwise
24.476–24.500 mm (0.9636–0.9646 in)
24.451 mm (0.9626 in)
24.476–24.500 mm (0.9636–0.9646 in)
24.451 mm (0.9626 in)
66.000–66.010 mm (2.5984–2.5988 in)
2-5