Chain Saw Names And Terms - Oregon CS300 Manuel D'instruction

CHAIN SAW NAMES AND TERMS

CHAIN SAW NAMES AND TERMS
Alignment flange: The protrusion on the bar
pad that fits into the bar slot .
Automatic oiler: The system that automatically
lubricates the guide bar and saw chain .
Bar pad: The mounting pad on the powerhead
that helps ensure proper alignment of the
guide bar .
Bar slot: The cutout portion of the guide
bar that fits on to the alignment flange and
mounting stud .
Bystander safety zone: A 20 ft (6 m) circle
around the operator that must remain free
from bystanders, children and pets .
Chain brake: A device for stopping or locking
the saw chain, activated manually or non-
manually when kickback occurs .
Chain catcher: A device for retaining the saw
chain if it breaks or derails .
Chain gauge: The thickness of the saw chain
drive link, where it fits into the bar groove,
indicated by the part number stamped on the
drive links .
Chain pitch: The distance between any three
consecutive rivets on the saw chain divided by
two, indicated by the part number stamped
on the drive links .
Chain saw powerhead: A chain saw without the
saw chain or guide bar .
Chain tensioning gear: A gear mounted on the
guide bar that adjusts saw chain tension when
rotated .
Chain tensioning ring: The ring around the side
cover release knob that when turned, adjusts
the saw chain tension .
Drive link: The fin-shaped link of the saw chain
that fits into the groove on the guide bar .
Drive sprocket: The toothed part that drives the
saw chain .
Effective cutting length: The approximate
distance from the root of the spiked bumper
to the outside edge of the cutting link with the
tensioner set to the middle position .
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 chain saw intended to
be gripped by the left hand .
Front hand guard: A structural barrier between
the front handle of a chain saw and the
guide bar, which also serves as an activating
mechanism for the chain brake .
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OREGON® Cordless Tool System
CHAIN SAW MODEL CS300
Guide bar: A railed structure that supports and
guides the saw chain . Sometimes simply called
the "bar" .
Guide bar cover: The plastic cover that protects
the guide bar and saw chain when the chain
saw is not in use .
Kickback: The rapid backward and/or upward
motion of the guide bar, occurring when the
saw chain near the top area of the nose 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 .
Low-kickback chain: A chain that complies with
the low kickback performance requirements of
ANSI B175 . 1 and CSA Z62 . 3 .
Mounting stud: The threaded protrusion on the
alignment flange that extends through the
bar slot .
Notching undercut: A notch cut in a tree to
direct the tree's fall .
Rear handle: The support handle located at
or toward the rear of the saw intended to be
gripped by the right hand .
Rear hand guard: A structural barrier at the
bottom right side of the rear handle to protect
the operator in case of rupture or derailing of
the saw chain .
Reduced kickback guide bar: A guide bar with
a maximum nose radius as specified in ANSI
B175 . 1 and CSA Z62 . 3 and which has been
demonstrated to reduce kickback significantly .
Saw chain: A loop of chain having cutting
teeth, that cuts the wood, that is driven by the
powerhead and is supported by the guide bar .
Sometimes simply called the "chain" .
Side cover: The plastic cover on the powerhead
that covers the drive sprocket and chain
tensioning gear which is removed and
installed with the side cover release knob .
Spiked bumper: A device fitted to the front
of the saw acting as a pivot point when in
contact with a tree or log to make cutting
easier . Also known as "bucking spikes" .
Trigger lock-out: A movable stop that prevents
the unintentional operation of the trigger
switch until manually actuated .
Trigger switch: A device that turns the chain
saw on and off .
Wear parts: Parts such as the saw chain and
guide bar that can wear during use and can be
replaced by the user .
AA 1214 - F/N 573259