Piston Dimensions and Clearances

Piston Service Size And Mark
0.25 mm (0.010 inch) O.S. 0.25
0.50 mm (0.020 inch) O.S. 50
0.75 mm (0.030 inch) O.S. 75
1.00 mm (0.039 inch) O.S. 1.00
Piston To:
Cylinder Wall Clearance 0.025 - 0.045 mm (0.0008 - 0.0016 inch)