Cleaning Procedure

CAUTION: Bodily injury may occur if carburetor cleaning fluid is exposed to the skin or if the fumes are inhaled.

Important: It is essential that the piston ring grooves are cleaned of carbon to the bare metal. Do not scrape the piston skirt.

1. Clean the following contaminates from the piston, the piston pin and connecting rod:
^ Sludge
^ Carbon
2. Clean the varnish from the piston pin by soaking it in Parts Immersion solvent GM P/N 12345368 or equivalent.