Chain Saw Names And Terms - Oregon CS1500-091 Manuel D'instructions Original

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
Guide bar: A railed structure that supports and
guides the saw chain Sometimes simply called
the "bar"
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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
Motor housing: The plastic cover of the chain
saw powerhead
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"
Strain relief bracket: The hook on the rear
handle to which the extension cord is looped to
protect the cord and prevent unplugging during
operation
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
OREGON® CHAIN SAW
MODEL CS1500-091
F/N 570773 - AC 0614