Baja WD250U Service Manual page 162

3) Install
• Circlip (1)
• Valve guide pipe (2)
Use the installing and disassembling device of
valve guide pipe
4) Ream the inner diameter of valve guide pipe
to get proper valve rod clearance.
CAUTION:
Regrind the valve race after installing valve
guide pipe
4. Valve race
1) Clean
• Carbon deposit (valve race and valve face)
2) Check
• Valve seat ring
Regrind the valve race if it is exfoliation
corroded.
3) Measure
• Contacting width of valve and valve race.
Regrind the valve race if unqualified
• Paint red lead powder on the valve fit
pyramidal force of valve race
• Place the valve into the cylinder cove
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