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Chainsaws require spare parts. Parts that are most often purchased include bars, bar oil, chains, fuel filters, mufflers, and spark plugs.
are the key components of a Chainsaw?
Engine - Most chainsaws use a 2 cycle engine to power the
cutting chain. As with other engines, chainsaw engines use spark plugs
The power of the engine is transferred through a centrifugal clutch to the
Fuel - Chainsaws have typically used 2 cycle engines
and thus require fuel with oil mixed into the fuel. In recent years, four
stroke engines have been used in some chainsaws.
Bar - the bar of the chainsaw creates a support
surface for the chain. Chainsaw bars have provisions to allow oil to flow
from the oil tank to lubricate the chain and bar.
Chain - the chain is driven by the drive sprocket and it is used to cut wood by removing a piece of wood as each blade is pulled across the surface of a piece of wood.
Chain Tensioner - the chain tensioner mechanism allows for the tightening or loosening of the chain by extending or retracting the bar from the drive sprocket.
Guard - in order to keep operators safe, the hand guard
prevents the operators forward hand from coming in contact with the chainsaw
chain near the top of the bar.
Bar Oil - Chainsaws use oil to lubricate the bar as the
chain slides passes around the bar in the groove of the bar. Bar oil is
kept in a reservoir on the chainsaw.
Bumper Spike - Sharp metal spikes near the base of the bar that help hold the chainsaw in place when cutting logs.
Control Lever - The control lever controls the chainsaw including choking the engine, starting the engine, run and start.
Throttle Trigger - The chainsaw throttle trigger controls the speed of the engine.
Decompression Valve - some chainsaws utilize a valve to allow easier starting by releasing compression on the engine.
© Chainsaw Parts Manual 2013