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construction activities. Wear protective clothing and
wash exposed areas with soap and water. Allowing
dust to get into your mouth, eyes, or lay on the skin may
promote absorption of harmful chemicals.
WARNING: Use of this tool can generate and/
or disperse dust, which may cause serious and
permanent respiratory or other injury. Always use
NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles
away from face and body.
Chainsaw Names and Terms
•
Bucking - The process of cross cutting a felled tree or log
into lengths.
•
Motor Brake - A device used to stop the saw chain when
the trigger is released.
•
Chain Saw Powerhead - A chain saw without the saw
chain and guide bar.
•
Drive Sprocket or 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 cut.
•
Front Handle - The support handle located at or toward
the front of the chain saw.
•
Front Hand Guard - A structural barrier between the front
handle of a chain saw and the guide bar, typically located
close to the hand position on the front handle.
•
Guide Bar - A solid railed structure that supports and
guides the saw chain.
•
Guide Bar Scabbard - Enclosure fitted over guide bar to
prevent tooth contact when saw is not in use.
•
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 contacts any object such as a
log or branch, or when the wood closes in and pinches the
saw chain in the cut.
•
Kickback, Pinch - The rapid pushback of the saw which
can occur when the wood closes in and pinches the
moving saw chain in the cut along the top of the
guide bar.
•
Kickback, Rotational - The rapid upward and backward
motion of 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 as a log or branch.
•
Limbing - Removing the branches from a fallen tree
•
Low-Kickback Chain - A chain that complies with the
kickback performance requirements of ANSI B175.1–2012
(when tested on a representative sample of chain saws.)
•
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
kickback performance requirements of ANSI B175.1–2000
when tested with specific chain saws. 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.
•
Ribbed Bumper - The ribs used when felling or bucking to
pivot the saw and maintain position while sawing.
•
Switch - A device that when operated will complete or
interrupt an electrical power circuit to the motor of the
chain saw.
•
Switch Linkage - The mechanism that transmits motion
from a trigger to the switch.
•
Switch Lockout - A movable stop that prevents
the unintentional operation of the switch until
manually actuated.
Additional Safety Information
WARNING: ALWAYS use safety glasses. Everyday
eyeglasses are NOT safety glasses. Also use face or
dust mask if cutting operation is dusty. ALWAYS WEAR
CERTIFIED SAFETY EQUIPMENT:
•
ANSI Z87.1 eye protection (CAN/CSA Z94.3),
•
ANSI S12.6 (S3.19) hearing protection,
•
NIOSH/OSHA/MSHA respiratory protection.
WARNING: Some dust created by power sanding,
sawing, grinding, drilling, and other construction
activities contains chemicals known to the State
of California to cause cancer, birth defects or
other reproductive harm. Some examples of these
chemicals are:
•
lead from lead-based paints,
•
crystalline silica from bricks and cement and other
masonry products, and
•
arsenic and chromium from chemically-
treated lumber.
Your risk from these exposures varies, depending on how
often you do this type of work. To reduce your exposure to
these chemicals: work in a well ventilated area, and work with
approved safety equipment, such as those dust masks that are
specially designed to filter out microscopic particles.
•
Avoid prolonged contact with dust from power
sanding, sawing, grinding, drilling, and other
construction activities. Wear protective clothing and
wash exposed areas with soap and water. Allowing
dust to get into your mouth, eyes, or lay on the skin may
promote absorption of harmful chemicals.
WARNING: Use of this tool can generate and/
or disperse dust, which may cause serious and
permanent respiratory or other injury. Always use
NIOSH/OSHA approved respiratory protection
appropriate for the dust exposure. Direct particles
away from face and body.
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