Kubota WSM OC60-E2 Workshop Manual page 95

OC60-E2, OC95-E2, WSM
Clearance between Valve Stem and Valve Guide
1. Measure the valve stem O.D. with an outside micrometer.
2. Measure I.D. of the cylinder head valve guide at the most worn
part with a small hole gauge. and find the oil clearance.
3. If the clearance exceeds the allowable limit, replace the valve
guide and valve.
Clearance
Factory spec.
between
valve stem
and valve
guide
Allowable limit
Valve stem
Factory spec.
O.D.
Valve guide
Factory spec.
bore I.D.
Free Length and Tilt of Valve Spring
1. Measure the valve spring with vernier calipers.
2. If the measurement is less than the allowable limit, replace it.
3. Place the spring on the surface plate and square at its side.
4. Measure the maximum distance A (See figure) by rotating
spring.
5. If the measurement exceeds the allowable limit, replace the
valve spring.
Factory
spec.
Valve spring free
length A
Allowable
limit
Tilt B Allowable limit
S-43
0.030 to 0.057 mm
OC60-E2
0.0012 to 0.0022 in.
0.035 to 0.065 mm
OC95-E2
0.0014 to 0.0026 in.
OC60-E2
0.1 mm
0.0039 in.
OC95-E2
5.968 to 5.980 mm
OC60-E2
0.2350 to 0.2354 in.
6.960 to 6.975 mm
OC95-E2
0.2740 to 0.2746 in.
6.010 to 6.025 mm
OC60-E2
0.2366 to 0.2372 in.
7.010 to 7.025 mm
OC95-E2
0.2760 to 0.2766 in.
0000009261E
31.3 to 31.8 mm
OC60-E2
1.2323 to 1.2520 in.
36.5 to 37.0 mm
OC95-E2
1.4370 to 1.4567 in.
31.0 mm
OC60-E2
1.2205 in.
36.0 mm
OC95-E2
1.4173 in.
1.2 mm
0.0472 in.
0000009263E
ENGINE