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Measuring Method-1
1) Install of dial gauge needle with valve stem
assembled as figure.
Set up calibrator to "O".
2) Shake well valve head.
Record total dial indicator reading.
Valve and guide set must be replaced if measured
value was exceeded the specified limit.
The gap of outside valve stem diameter and inside
guide diameter is valve stem clearance.
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Valve Stem Clearance
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Measuring Method-II
1) Measure valve stem outside diameter.
2) Measure valve guide inside diameter with a caliper
calibrator or telescoping gauge.
The gap of outside valve stem diameter and inside
guide diameter is valve stem clearance.
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Replacement of Valve Guide
<Removal of Valve Guide>
Pull out the valve guide with hammer and valve guide
remover from bottom of cylinder head.
The distance is 14.1 mm from the bottom of the
cylinder head to the edge of valve guide top.
EJM2037S
EJM2038S
EJM2039S
EJM2040S
Standard Limit
Intake Side TIR 0.039-0.068 mm 0.20 mm
Exhaust Side TIR 0.064-0.093 mm 0.25 mm
2.3.2. Valve Stem and Valve Guide Clearance
Remover and
installer
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