Yamaha XS650SE Shop Manual page 154

2) Piston oversize
3) Piston pin outside diameter x length
2) Ring end gap
3) Ring groove side clearance
1) Type
2) Number and type of bearing
6) Camshaft deflection limit
7) Cam chain
Number of links
2) Rocker arm shaft diameter
9. VALVE,VALVE S E A T A N D V A L V E G U I D E
Valve per cylinder
2) Valve clearance (In cold engine)
3) Dimensions
Valve head diameter "A"
width
Valve face
Valve seat width "C"
0.050 - 0.055 mm (0.0020 - 0.0022 in)
20.0 _i,,,,, mm x 61 .O _z,3 mm
(0.79 _~,ooo2 In x 2.40 _E,o,,6 in)
Barrel ring 1.2 mm (0.047 in)
(2nd) Taper ring 1.5 mm (0.059 in)
(Oil ring)
With expander 2.8 mm (0.110 in)
(Installed, top)
0.2 * 0.4 mm IO.008 - 0.016 in)
(Installed, 2nd)
0.2 - 0.4 mm (0.008 - 0.016 in)
(Installed, oil)
0.3 - 0.9 mm (0.012 - 0.035 in)
(Top)
0.04 - 0.08 mm (0.0016 - 0.0031 in)
0.03 - 0.07
Chain (Center side)
4 bearings, Ball bearings (6005)
0.03 mm (0.0012 in)
IN: 0.10 mm (0.0039 in)
EX: 0.15 mm (0.0059 in1
IN: 41 mm (1.614 in)
EX: 35 mm
2.1 mm (0.083 in) )J(
IN:
EX:
IN: 1.3mm (0.051 in)
EX: 1.3 mm (0.051 in)
m m
(0.0012 - 0.0028 in)
(1.378 in)
C
2.1 mm (0.083 in)