... ,screw plug, cover plug, cylinder liner, hexagon bolt, plain washer, tooth lock washer, cylinder head bolt, straight pin, sleeve,packing compound, crankcase ... heel,adapter, connection rod, con-rod cover, con-rod bolt,big end bush,con-rod bearing,piston set of piston ... valve seat exhaust, cover, valve guide, outer valve spring, inner valve spring, valve collect, pipe connection, tube,hose clip,camshaft ...