Piston Diameter Measurement Procedure

Piston Diameter Measurement Procedure





1. Using an outside micrometer, measure the width of the piston 40 mm (1.575 inch) below the crown (top) of the piston at the thrust surface which is perpendicular to the centerline of the piston pin (1).
2. Compare the measurement to the diameter listed in the engine mechanical specifications.
3. You must replace the piston if any of its dimensions are out of specification. There are no oversized pistons available.