Yamaha XP500 TMax Technical Manual page 38

GENERAL SPECIFICATIONS
Valve head diameter A exhaust
Valve face width B intake
Valve face width B exhaust
Valve seat width C intake
Valve seat width C exhaust
Valve margin thickness D intake
Valve margin thickness D exhaust
Valve stem diameter-intake
Valve stem diameter-exhaust
Valve guide inside diameter-intake
Valve guide inside diameter-exhaust
Valve stem to valve guideclearance-intake
Valve stem to valve guideclearance-exhaust
Valve stem runout
Valve seat width-intake
Valve seat width-exhaust
Valve seat material-intake
Valve seat material-exhaust
Valve spring:
Free length-intake
Free length-exhaust
Spring rate-intake (K1)
Spring rate-intake (K2)
Spring rate-exhaust (K1)
Spring rate-exhaust (K2)
Installed length-intake (valve closed)
Installed length-exhaust (valve closed)
Spring tilt-intake ((degree))
Spring tilt-exhaust ((degree))
Winding direction-intake(top view)
Winding direction-exhaust(top view)
Piston:
Piston part number (***-11631-**)
Piston-to-cylinder clearance
<Limit>
Diameter D
Height H
Offset
Offset direction
Piston pin bore inside diameter
Piston pin outside diameter
Piston ring:
Top ring:
Ring type
Dimensions (B x T)
End gap (installed)
Ring side clearance
XP500 TMax Technical Orientation Guide
21.9~22.1mm
1.14~1.98mm
1.14~1.98mm
0.9~1.1mm
0.9~1.1mm
0.6~0.8mm
0.6~0.8mm
3.975~3.990mm
3.960~3.975mm
4.000~4.012mm
4.000~4.012mm
0.010~0.037mm
0.025~0.052mm
0.04mm
0.9~1.1mm
0.9~1.1mm
PB6
V557W
35.59mm
35.59mm
18.845N/mm(1.92kgf/mm)
24.52N/mm(2.5kgf/mm)
18.845N/mm(1.92kgf/mm)
24.52N/mm(2.5kgf/mm)
30.39mm
30.39mm
2.5º/1.6mm
2.5º/1.8mm
Clockwise
Clockwise
5GJ-11631-00
0.020~0.045mm
0.15mm
65.965~65.980mm
9mm
0.5mm
Intake side
16.002~16.013mm
15.991~16.000mm
Barrel
0.80x2.45mm
0.15~0.25mm
0.030~0.065mm
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