wsm M6060, Workshop Manual

Page: 219 / 639

ENGINE M6060, M7060, WSM
1-S58
Clearance between Valve Stem and Valve Guide
1. Remove carbon from the valve guide section.
2. Measure the valve stem O.D. with an external micrometer.
3. Measure the valve guide I.D. with a small hole gauge. Calculate
the clearance.
4. If the clearance is more than the allowable limit, replace the
valves. If the clearance stays more than the allowable limit,
replace the valve guide also.
9Y1210828ENS0082US0
Replacement of Valve Guide
(When removing)
1. Press out the used valve guide with the valve guide replacing
tool.
(When installing)
1. Clean the new valve guide and valve guide bore, and apply
engine oil to them.
2. Press fit the new valve guide with the valve guide replacing tool.
3. Ream accurately the I.D. of the valve guide to the specified
dimension.
IMPORTANT
• Do not hit the valve guide with a hammer during
replacement.
9Y1210828ENS0083US0
Clearance between
valve stem and guide
(Intake)
Factory specification
0.055 to 0.085 mm
0.0022 to 0.0033 in.
Allowable limit
0.10 mm
0.0039 in.
Clearance between
valve stem and guide
(Exhaust)
Factory specification
0.055 to 0.085 mm
0.0022 to 0.0033 in.
Allowable limit
0.10 mm
0.0039 in.
Valve stem O.D. (Intake) Factory specification
6.960 to 6.975 mm
0.2741 to 0.2746 in.
Valve stem O.D.
(Exhaust)
Factory specification
6.960 to 6.975 mm
0.2741 to 0.2746 in.
Valve guide I.D. (Intake
and exhaust)
Factory specification
7.030 to 7.045 mm
0.2768 to 0.2773 in.
Valve guide I.D. (Intake
and exhaust)
Factory specification
7.030 to 7.045 mm
0.2768 to 0.2773 in.
(A) When Removing (B) When Installing
KiSC issued 08, 2013 A