Piston

NOTE:
^ Carefully clean away all the carbon adhering to the piston head and the piston ring grooves.
^ Never use a wire brush to clean the pistons. Damage will result.
^ Visually check each piston for cracking, scoring, and other signs of excessive wear.
^ If any of the above conditions are present, the piston must be replaced.





1. Measure the piston outside diameter with micrometer at the piston grading position and a right angle to the piston pin.
^ Piston grading position (from piston head): 31.0 mm (1.2204 inch)








^ The size mark for piston outside diameter is represented by the "G" as shown in the illustration. Measure the cylinder bore inside diameter.