... ring, acorn nut, manifold, retaining plate, sring lock washer, cheese head screw, o-seal,screw plug, cover plug, cylinder liner, hexagon ... bolt, plain washer, tooth lock washer, cylinder head bolt, straight pin, sleeve,packing compound, crankcase end cover, housing ... piston set of piston rings, piston pin,snap ring, cylinder head cover, valve seat intake, valve seat exhaust, cover, ...