Crucial to your engine’s performance and operation, the 49cc 4-stroke connecting rod assembly is a pivotal part of your crankcase. Connecting your piston to the crankshaft, this piece works in conjunction with your transmission to create rotational force. The result is the buildup of compression and ultimately engine function. So, if your engine isn’t running or your existing shafted is damaged, then you will need the 49cc 4-stroke connecting rod assembly for proper engine operation.
Parts #31-34 on the 4-Stroke Diagram
4 Stroke Engine Replacement Part # 31 -- Link Lever