Piston and Bore Measurement

PISTON and BORE MEASUREMENT





NOTE: Pistons and cylinder bores should be measured at normal room temperature, 21°C (70°F).

Piston and cylinder wall must be clean and dry. Piston diameter should be measured 90 degrees to piston pin (1).

1. Measurement should be taken approximately 17 mm (0.669 in.) from the bottom of the skirt (2) as shown.




NOTE: Correct piston to bore clearance must be established in order to assure quiet and economical operation.

2. Cylinder bores should be measured halfway down the cylinder bore and transverse (measurement location B) to the engine crankshaft center line shown. Refer to Engine Specifications Engine Specifications.