(a)   on a vehicle with manual transmission, a heavy metal wheel attached to the engine crankshaft which rotates with it; helps smooth out the power surges from the power strokes and also serves as part of the clutch and cranking system.

­­­­ (a)   has offset journals to which the connecting rods are attached; it converts their up-and-down (reciprocating) motion into circular (rotary) motion.

­­­ (a)   A shaft in the engine which has a series of cams for operating the valve mechanisms.

(a)   In the engine, the round plug that slides up and down in the cylinder and which, through the connecting rod, forces the crankshaft to rotate.

(a)   a device with several passages through which exhaust gasses leave the engine combustion chambers and enter the exhaust piping system.

(a)   The detachable lower part of the engine which encloses the crankcase and acts as an oil reservoir.

(a)   A set of tubes, or casting with several passages, through which air or air-fuel mixture flows from the throttle valves to the intake ports in the cylinder head.

(a)   The basic framework of the engine, in and on which the other engine parts are attached.

(a)   A pivoted lever that transfers cam or pushrod motion to the valve stem.