... : air filters, silencer, timing adjuster, chain adjuster, valve oil seal, oil seal, spark plug, spoke, etcK. Engine: cylinder, piston ... : front hub, rear hub, hub cover, kick sprocket, oil pump sprocket, sprocket sitting, timing chain, driving gear, etc ... piston ring set, magneto, clutch, starter motor, oil seal, paper gasket, belt, bearing, oil switch, rocker crankshaft camshaft, carburetor, spark ...