Parts for Mcculloch CS380: Cylinder & Piston Parts

This piston pin retainer is an authentic OEM replacement part sourced directly from the manufacturer for use on gas-powered chain saws. This retainer holds the pin that connects the connecting rod and piston. This is a small metal ring that has an opening on one side. It should be replaced anytime the piston is accessed. When it is taken off during repairs, it loses its compression and should be replaced.Take the spark plug out to make sure the saw cannot be started. Refer to the chainsaw's model diagram for the exact location of the piston ring. Remove the side cover, bar, and chain from the saw. Take the top cover off and set the screws aside. Next, remove the starter assembly and top handle, then the clutch drum and clutch with a clutch removal tool. Continue to disassemble the saw until the piston is visible. Use needle-nose pliers to remove the piston pin retainer and install the new one. Reverse the steps to reassemble the chain saw. Reinstall the spark plug and check the chainsaw for proper operation.This piston pin retainer is a quality metal part that is sold individually. It is designed for use in chainsaws manufactured by Poulan, Husqvarna, and Jonsered.