chainsaw booklet
1/19/00
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CHAIN SAW NAMES AND TERMS
Bucking - The process of cross cutting a felled tree or log into
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lengths.
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Chain Brake - A device used to stop the chain saw.
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Chain Saw Powerhead - A chain saw without the saw chain and
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guide bar.
Clutch - A mechanism for connecting and disconnecting a driven
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member to and from a rotating source of power.
Drive Sprocket or Sprocket - The toothed part that drives the
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saw chain.
Felling - The process of cutting down a tree.
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Felling Back Cut - The final cut in a tree felling operation made
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the opposite side of the tree from the notching cut.
Front Handle - The support handle located at or toward the fron
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of the chain saw.
Front Handle Guard - A structural barrier between the front
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handle of a chain saw and the guide bar, typically located close t
the hand position on the front handle and sometimes employed a
an activating lever for a chain brake.
Guide Bar - A solid railed structure that supports and guides the
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saw chain.
Guide Bar Scabbard - Enclosure fitted over guide bar to preven
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tooth contact when saw is not in use.
60°
Kickback - The backward or upward motion, or both of the guide
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bar occurring when the saw chain near the nose of the top area o
the guide bar contacts any object such as a log or branch, or whe
the wood closes in and pinches the saw chain in the cut.
Kickback, Pinch - The rapid pushback of the saw which can
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occur when the wood closes in and pinches the moving saw cha
in the cut along the top of the guide bar.
Kickback, Rotational - The rapid upward and backward motion
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the saw which can occur when the moving saw chain near the
upper portion of the tip of the guide bar contacts an object, such
a log or branch.
Low-Kickback Chain - A chain that complies with the kickback
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If you have any questions, call 1-800-54-HOW