Valve Guide - TGB BLADE 600 Service Manual

Valve guide

Caution
Before measuring the valve guide, clean carbon
deposits with reamer.
Tool: 5.0 mm valve guide reamer
Measure and record each valve guide inner
diameters.
Service limit: 5.03 mm
The difference that the inner diameter of valve
guide deducts the outer diameter of valve stem is
the clearance between the valve stem and valve
guide.
Service Limit: IN→0.10 mm
EX→0.15 mm
Caution
If clearance between valve stem and valve
guide exceeded service limit, check whether the
new clearance that only replaces new valve
guide is within service limit or not. If so, replace
valve guide.
Correct it with reamer after replacement.
If clearance still exceeds service limit after
replaced valve guide, replace valve stem too.
Caution
It has to correct valve seat when replacing valve
guide.
6. CYLINDER HEAD/VALVE
6-9