3.27
ENGINE
If cylinder wear or damage is excessive, it will be
necessary to replace the cylinder. Hone only enough to
deglaze the outer layer of the cylinder bore.
PISTON INSPECTION
1. Measure piston outside diameter at a point 7 mm up
from the bottom of the piston at a right angle to the
direction of the piston pin.
2. Subtract this measurement from the maximum
cylinder measurement obtained earlier.
3. Measure piston pin bore. Replace piston if out-of-
round
4. Measure piston pin O.D. Replace piston pin if out-of-
round.
5. Measure connecting rod small end ID. Replace
crankshaft if out-of-round.
Piston to Cylinder Clearance
Std: .0015- .0032” (0.038- 0.082 mm)
Limit: .0043” (.11 mm)
EXAMPLE OF CROSS HATCH PATTERN
Piston
Piston Pin
7mm
Piston Pin Bore
Piston Pin Measurement Locations
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