Kubota M6800S Workshop Manual page 146

M6800 · M6800S · M8200 · M9000, WSM
Cylinder Wear
1. Measure the I.D. of the cylinder at the six positions (see figure)
with a cylinder gauge to find the maximum and minimum I.D.'s.
2. Get the difference (Maximum wear) between the maxiumum and
the minimum I.D.'s.
3. If the wear exceeds the allowable limit, bore and hone to the
oversize dimension. (Refer to "Correcting Cylinder".)
4. Visually check the cylinder wall for scratches. If deep scratches
are found, the cylinder should be bored. (Refer to "Correcting
Cylinder".)
Factory spec.
Cylinder Bore I.D.
Allowable limit
(A) Top
(B) Middle
(C) Bottom (Skirt)
1-S61
ENGINE
98.000 to 98.022 mm
3.8582 to 3.8591 in.
98.15 mm
3.8642 in.
(a) Right-angled to piston pin
(b) Piston pin direction
W1070089
KiSC issued 03, 2008 A