The engine assembly consists of a crank connecting rod system: connecting rods, crankshafts, bearing bushes, flywheels, and pistons. Air distribution system: cylinder head, valve cover, camshaft, intake and exhaust pipes, etc…Cooling system: water tank, water pump, radiator, fan, etc. Lubrication system: oil pump, filter, oil passage, pressure limiting valve, pressure sensing plug, etc… Fuel system: gasoline tank, gasoline gauge, gasoline pipe, gasoline pump, etc.
