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Bucking
Process of cutting a felled tree or log
into lengths.
Chock
Block or wedge used to secure wood from
moving.
Felling
Process of cutting down a tree.
Felling Cut
Final cut when felling a tree. Make this
cut on opposite side of tree from notching cut.
Front Handle
Located at front of saw body.
Front Hand Guard
Shield between front handle
and guide bar. Protects left hand while using
saw.
Guide Bar
Metal bar that extends from saw body.
The guide bar supports and guides chain.
Guide Bar Nose
Tip or end of guide bar.
Guide Bar Retainer
Bolt-like fastener that holds
guide bar in place during assembly and operation
of chain saw.
Kickback
Quick backward and upward motion
of guide bar. Kickback may occur when tip of
guide bar touches an object while chain is mov-
ing. The guide bar will kick up and back towards
operator.
Limbing
Process of cutting limb(s) from a felled
tree.
Low-Kickback Chain
Chain that reduces chance of
kickback as required by ANSI B175.1.
Normal Cutting
Position
Stance used while making
bucking and felling cuts.
Notching Cut
Notch cut in tree that directs fall of
tree.
Oiler Control
System for oiling guide bar and
chain.
Power Head
Chain saw without chain and guide
bar. Also known as saw body.
Pushback (Kickback, Pinch)
Rapid pushback of
chain saw. Pushback may occur if chain along
top of guide bar is pinched, caught, or contacts a
foreign object.
Rear Handle
Handle located at rear of saw
body.
Reduced Kickback Guide Bar
Guide bar that
reduces chance of kickback.
Replacement Chain
Chain that complies with
ANSI B175.1 when used with a specific saw. It
may not meet ANSI requirements when used with
other saws.
Saw Chain (Chain)
Loop of chain having cutting
teeth for cutting wood. The motor drives chain.
The guide bar supports chain.
Spiked Bumper (Spike)
Pointed teeth at front of
saw body beside guide bar. Keep spiked bumper
in contact with wood when felling or bucking. It
helps maintain position of saw while cutting.
Sprocket
Toothed wheel that drives chain.
Switch
Device that completes or interrupts electri-
cal circuit to motor of saw.
Switch Linkage
This device connects switch
to trigger. It moves switch when you squeeze
trigger.
Switch Lockout
Device that reduces accidental
starting of saw.
Trigger
Device that turns saw on and off. Squeez-
ing trigger turns saw on. Releasing trigger turns
saw off.
Trimming (Pruning)
Process of cutting limb(s)
from a living tree.
Undercut
An upward cut from underside of log or
limb. This is done while in normal cutting position
and cutting with top of guide bar.
Unibody
Main body of chain saw.
CHAIN SAW NAMES AND TERMS
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