Kubota WSM 07-E3B Series Workshop Manual page 205

07-E3B SERIES, WSM
Clearance between Piston Ring and Groove
1. Clean the rings and the ring grooves, and install each ring in its
groove.
2. Measure the clearance between the ring and the groove with a
feeler gauge or depth gauge.
3. If the clearance exceeds the allowable limit, replace the piston
ring.
4. If the clearance still exceeds the allowable limit with new ring,
replace the piston.
Top ring
Factory spec. Second ring
Oil ring
Top ring
Allowable limit Second ring
Oil ring
S-102
ENGINE
0.050 to 0.090 mm
0.0020 to 0.0035 in.
0.090 to 0.12 mm
0.0036 to 0.0047 in.
0.020 to 0.060 mm
0.00079 to 0.0023 in.
0.15 mm
0.0059 in.
0.20 mm
0.0079 in.
0.15 mm
0.0059 in.
W1066183
KiSC issued 06, 2020 A