Chainsaw Names And Terms - Oregon CS1500-093 Instruction Manual

Chainsaw 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 cut-out portion of the guide bar that
fits on to the alignment flange and mounting stud.
Bystander safety zone: A 6 m (20 ft.) 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.
Chainsaw powerhead: A chainsaw 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 chainsaw intended to be
gripped by the left hand.
Front hand guard: A structural barrier between
the front handle of a chainsaw 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".
Chainsaw Model CS1500
Chainsaw Names and Terms
Guide bar cover: The plastic cover that protects
the guide bar and saw chain when the chainsaw 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 chainsaw
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 6 meter cord can be
looped to the hook on the rear handle to keep it
out of the way and assist in ease of 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 chainsaw
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.
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