Chainsaw Names And Terms - Oregon CS250 Operator's Manual

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ChAiNsAW MoDEl Cs 250

cHainsaW naMes and terMs

Automatic Oiler: A system that
automatically lubricates the guide bar
and saw chain.
Bucking: The process of cross-cutting a
felled tree or log into lengths.
Bucking Spikes: The pointed tooth or
teeth for use when felling or bucking
to pivot the saw and maintain position
while sawing.
Chain Brake: A device used to stop the
saw chain.
Chainsaw Powerhead: A chainsaw
without the saw chain or guide bar.
Drive Sprocket: The toothed part that
drives the saw chain.
Felling: The process of cutting down a
tree.
Felling Back Cut: The final cut in a tree
felling operation made on the opposite
side of the tree from the notching
undercut.
Front Handle: The support handle
located at or toward the front of the
chainsaw.
Hand Guard: A structural barrier
between the front handle of a chainsaw
and the guide bar, typically located
closest to the hand position of the front
handle and sometimes employed as
an activating mechanism for the chain
brake.
Guide Bar: A railed structure that
supports and guides the saw chain.
Kickback: The backward or upward
motion, or both, of the guide bar
occurring when the saw chain near the
nose of the top area of the guide bar
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ChAINSAW NAMES AND TERMS
contacts any object such as a log or
branch, or when the wood closes in and
pinches the saw chain in the cut.
Low-Kickback Chain: A chain
that complies with the kickback
performance requirements of ANSI
B175.1 when tested on a representative
sample of chainsaws.
Normal Cutting Position: Those
positions assumed in performing the
bucking and felling cuts.
Notching Undercut: A notch cut in a tree
that directs the tree's fall.
Rear Handle: The support handle
located at or toward the rear of the saw.
Reduced Kickback Guide Bar: A guide
bar which has been demonstrated to
reduce kickback significantly.
Replacement Saw Chain: A chain
that complies with the kickback
performance requirements of ANSI
B175.1 when tested with specific
chainsaws. It may not meet the ANSI
performance requirements when used
with other saws.
Saw Chain: A loop of chain having
cutting teeth, that cut the wood, and
that is driven by the powerhead and is
supported by the guide bar.
Trigger Lock-Out: A movable stop that
prevents the unintentional operation
of the trigger switch until manually
actuated.
Trigger Switch: A device that when
operated will complete or interrupt an
electrical power circuit to the motor of
the chainsaw.
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