Yamaha XS650SE, Shop Manual

Page: 180 / 215

Valve stem diameter
EX: 6.0 mm (0.315 in)
Valve guide diameter
IN: 8.0 mm
mm (0.315 in)
Valve stem guide clearance
IN: 0.020 0.044 mm (0.00079 0.00173 in)
EX: 0.035 0.059 mm IO.00138 0.00232 in)
4) Valve face limit
IN EX: 0.03 mm (0.0012 in) or less
VALVE SPRING
Free length
INNER 42 mm (1.654
OUTER 42.55 mm (1.675 in)
2) Spring rate
INNER (INIEX): = 1.43 kg/mm (80.1
= 1.81 kg/mm (101.4
OUTER (INIEX): = 3.2 kg/mm (179.2 lb/i”)
= 4.18
Installed length
INNER (INIEX): 35 mm (1.378 in)
OUTER
37 mm (1.457
4) Installed pressure (Valve closed)
INNER (INIEX): 10 kg 1.5 lb)
OUTER 17.7 1.25 kg (39.0 2.8
5) Compressed length (Valve
INNER (INIEX): 25.5 mm Il.004
OUTER 27.5 mm (1.083
61 Compressed (Valve
INNER 27.2 1.9 kg (60.0 4.2 lb)
OUTER 57.4 kg 8.8 lb)
7) Wire diameter
INNER 2.9 mm (0.114 in)
OUTER 4.2 mm (0.165 in)
8)
INNER 19.4 mm IO.764 in)
OUTER (INIEX): 32.6 mm (1.283 in)
9) Number of windings
INNER 6.0 turns
OUTER 4.25 turns
11. CRANKSHAFT
Crankshaft deflection limit
(A)
0.05 mm (0.002 in)
2) Con-rod large end clearance 0.4 mm 10.0059” 0.0157 in)
3) Width of crankshaft
66 mm in)
186
mm (7.323 in)
4) Crank pin I.D.
26 mm (1.024 in)
5) Crank pin O.D. length 26 65 mm
(1.024
12. CONNECTING ROD
Big end I.D.
mm (1.339 in)
2) Small end I.D. mm (0.787 in)
13. CRANK BEARING
Type Right end
bearing)
bearing)
2) Oil seal type
SD-25-40-9
14. CLUTCH
Clutch
Wet, multiple
Clutch operating mechanism
Inner push type. screw push system
Primary reduction ratio and method
(2.666). spar gear
4) Primary reduction gear back lash
21.45 (0.8445