Yamaha Star XVS13AA(C) 2011 Service Manual page 33

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)
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
Piston
Piston-to-cylinder clearance
Limit
Diameter D
ENGINE SPECIFICATIONS
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)
1.00–1.20 mm (0.0394–0.0472 in)
1.6 mm (0.06 in)
1.00–1.20 mm (0.0394–0.0472 in)
1.6 mm (0.06 in)
42.43 mm (1.67 in)
40.31 mm (1.59 in)
42.43 mm (1.67 in)
40.31 mm (1.59 in)
35.00 mm (1.38 in)
35.00 mm (1.38 in)
24.75 N/mm (2.52 kgf/mm, 141.32 lb/in)
34.93 N/mm (3.56 kgf/mm, 199.45 lb/in)
24.75 N/mm (2.52 kgf/mm, 141.32 lb/in)
34.93 N/mm (3.56 kgf/mm, 199.45 lb/in)
171.00–197.00 N (17.44–20.09 kgf, 38.44–
44.29 lbf)
171.00–197.00 N (17.44–20.09 kgf, 38.44–
44.29 lbf)
2.5°/1.9 mm (2.5°/0.07 in)
2.5°/1.9 mm (2.5°/0.07 in)
Clockwise
Clockwise
100.000–100.010 mm (3.9370–3.9374 in)
0.050 mm (0.0020 in)
0.050 mm (0.0020 in)
0.030–0.055 mm (0.0012–0.0022 in)
0.15 mm (0.0059 in)
99.955–99.970 mm (3.9352–3.9358 in)
2-6