Cylinder head and valve mechanisms
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2. Press in the valve guide from the back of combustion chamber until the special tool gets in
touch with the cylinder head.
3. Check whether the height of valve guide meets the technique index(See——Check of
Valve Guide).
Standard height:
Intake side: 19.8～20.4mm{0.7795～0.8031in}
Exhaust side: 14.6～15.2mm{0.5748～0.5984in}
Check/repair of valve seat
1. By use of surface painting method, measure the contact width of valve seat. If necessary,
use a valve seat cutter 44° to reprocess the surface of valve or valve seat.
Standard width: 0.9～1.3mm{0.035～0.051in}
2. Check the indentation of valve seat. Measure the extension length of valve rod (size: L).
Replace the cylinder head when necessary.
Standard size L
Intake:44.07～44.67mm{1.7350～1.7587in}
Exhaust:44.07～44.67mm{1.7350～1.7587in}
Special tool
Special tool
Special tool
Special tool
Special tool
Special tool
Contact width of valve seat
Valve guide tube
Cylinder head
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