The Briggs & Stratton 715793 Piston Assembly Standard helps restore proper compression and smooth piston movement for reliable engine performance. Designed as a replacement piston assembly, it moves within the engine cylinder as part of the combustion cycle, transferring combustion force through the connecting rod to the crankshaft. Proper piston operation helps maintain compression, ... https://www.wholetoolbox.com/briggs-stratton-715793-piston-assembly-standard/715793.html