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Engine parts are a general term for the engine as a whole and its subsystem parts, mainly including components of the two major mechanisms (crank-connecting rod mechanism and valve mechanism) and five major systems (fuel supply, lubrication, cooling, ignition, and starting), such as pistons, crankshafts, valves, oil pumps, water pumps, generators, spark plugs, etc. These components work together to enable the tractor engine to work properly and generate power.
