Piston Ring 522990101

This is a genuine Echo Part for use with Chainsaws. The piston ring set seals the gap between the piston and the cylinder wall of the engine. The most common reasons for replacing the piston ring is if the saw won't start, the engine starts then dies, there is low compression, the engine is not turning over (engine seized), or there is a sudden loss of power. This part is sold individually. Here is a list of tools that are needed to replace the piston ring a wrench set, ratchet/socket set, flat-blade screwdriver, small screwdriver, Torx drivers, Phillip's screwdriver, long-nosed pliers, adjustable pliers, clutch removal tool (optional), impact driver (optional), hammer, ignition gapping gauge, gasket scraper or razor, liquid gasket and two-cycle engine oil.