Yamaha XS650 Series, Shop Manual

Page: 97 / 215

9. VALVE, VALVE SEAT AND VALVE GUIDE
Valve per cylinder
Valve clearance cold
Dimensions
Valve head diameter “A”
Valve face width
Valve width
Valve margin thickness
Valve diameter
Valve guide diameter
Valve guide clearance
Valve face limit
10. VALVE SPRING
Free length
Spring rate
Installed length (Valve closed)
Installed pressure (Valve closed)
Compressed length (Valve
Compressed pressure
Wire diameter
Winding
Number of windings
2
PCS.
IN: 0.06 mm (0.0024
EX: 0.15 mm IO.0059
IN: 41 mm (1.614
EX: 35 mm (1.378
IN: 2.1 mm (0.083
EX: 2.1 mm (0.083
IN: 1.3 mm (0.051
EX: 1.3 mm 10.051
IN: 1.3 mm (0.051
EX: 1.3 mm (0.051
IN: mm 10.315
EX: mm in)
I N : mm
EX: mm in)
IN: 0.010-0.034 mm 0.00173 in)
EX: 0.059 mm in)
IN & EX: 0.03 mm 10.0012 less
INNER 42 mm (1.654 in)
42.55 mm (1.675
INNER 1.43 kg/mm
1.81 kg/mm (101.4
k 3.2 kg/mm (179.2
4.18 kg/mm (234.1
INNER 35 mm 11.378 in)
37 mm 11.457 in)
INNER 10 0.7 kg 1.5
17.7 kg (39.0 2.8
INNER ‘25.5 mm 11.004 in)
27.5 mm (1.083 in)
INNER 27.2 il.9 kg 4.2
57.4 4.0 kg 8.8 lb)
INNER 2.9 mm (0.114 in)
4.2 mm (0.165 in)
INNER 19.4 mm
32.6 mm (1.283 in)
INNER 6.0
4.25