Piston: Specifications

INSPECT PISTON DIAMETER
Using a micrometer, measure the piston diameter at right angles to the piston pin center line, 30.3 mm (1.193 inch) from the piston head.
Piston diameter 88.439 to 88.449 mm (3.4818 to 3.4822 inch)

INSPECT PISTON CLEARANCE
Subtract the piston diameter measurement from the cylinder bore diameter measurement.
Specified oil clearance 0.051 to 0.100 mm (0.0020 to 0.0039 inch)