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gLOSARY OF TERMS
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Skating
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When the chain saw fails to dig in during a cut, the guide
bar can begin hopping or dangerously skidding along the
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surface of the log or branch, possibly resulting in the loss
of control of the chain saw. The sideward motion of the
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guide bar can increase the risk of kickback. To prevent
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or reduce this skating, hold the chain saw with two hands
and make sure the saw chain establishes a groove for
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cutting.
Bucking
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The process of cross cutting a felled tree or log into
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lengths.
Bouncing
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Never cut small, flexible branches or brush with your
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chain saw. Their size and flexbility can easily cause the
saw to bounce toward you or bind up with enough force
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to cause a kickback. The best tools for that kind of work
are a hand saw, pruning shears, an axe and other hand
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tools.
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Chain Brake
A device used to stop the saw chain.
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Chainsaw Powerhead
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A chainsaw without the saw chain and guide bar.
Clutch
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A mechanism for connecting and disconnecting a driven
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member to and from a rotating source of
power.
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drive Sprocket or Sprocket
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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 Hand guard
A structural barrier between the front handle of a chainsaw
and the guide bar, typically located close to the hand
position on the front handle, and sometimes employed as
an activating lever for a chain brake.
Front Handle
The support handle located at or toward the front of the
chainsaw. This handle is for the left hand.
guide Bar
IT
PT
NL
SV
DA NO
IT
PT
NL
SV
DA NO
IT
PT
NL
SV
DA NO
IT
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
NL
PT
SV
DA NO
SV
PT
NL
DA NO
DA
PT
NL
SV
NO
PT
NL
SV
DA
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
PT
NL
SV
DA NO
FI
HU CS RU
FI
HU CS RU
FI
HU CS RU
English
FI
HU CS RU
A solid railed structure that supports and guides the saw
FI
HU CS RU
chain.
kickback
FI
HU CS RU
The backward or upward motion, or both, of the guide bar
FI
HU CS RU
occurring when the saw chain near the nose of the top
area of the guide bar contacts any object such as a log or
FI
HU CS RU
branch, or when the wood closes in and pinches the saw
chain in the cut.
NO
FI
HU CS RU
kickback (Pinch)
FI
HU CS RU
The rapid pushback of the saw which can occur when the
wood closes in and pinches the moving saw chain in the
FI
HU CS RU
cut along the top of the guide bar.
kickback (Rotational)
HU
FI
CS RU
The rapid upward and backward motion of the saw which
CS
FI
HU
RU
can occur when the moving saw chain near the upper
portion of the tip of the guide bar contacts an object, such
RU
FI
HU CS
as a log or branch.
Low-kickback Chain
FI
HU CS
RU
A chain that complies with the kickback performance
FI
HU CS
RU RO
requirements of ISO 9518 when tested on a representative
sample of chainsaws.
FI
HU CS
RU RO
Normal Cutting Position
FI
HU CS
RU RO
Those positions assumed in performing the bucking and
felling cuts.
FI
HU CS
RU RO
Notching undercut
FI
HU CS
RU RO
A notch cut in a tree that directs the tree's fall.
Rear Handle
FI
HU CS
RU RO
The support handle located at or toward the rear of the
FI
HU CS
RU RO
saw. It normally contains the throttle. This handle is for the
right hand.
FI
HU CS
RU RO
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 ISO 9518 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 motor and is supported by the guide
bar.
Springpole
A small tree (sapling) or limb that is bent or trapped under
tension. It may "spring back" rapidly when cut, causing a
dangerous situation.
32
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