E04 BUDDY 125 CRANKSHAFT

The Genuine Buddy 125 crankshaft diagram shows the complete engine rotating assembly, including the crankshaft, connecting rod assembly, piston pin, roller bearings, timing chain, cam chain tensioner, chain guide components, woodruff key, and related mounting hardware. This diagram is used to identify OEM replacement parts for engine rebuilding, timing system repairs, and bottom-end engine service. The crankshaft converts piston movement into rotational power while working with the timing chain system to synchronize engine operation. Common repairs include replacing worn crankshaft bearings that cause engine vibration or noise, servicing a stretched timing chain that affects engine timing, replacing a faulty cam chain tensioner that causes rattling sounds, and rebuilding the engine after internal component wear or failure.