Poulan 1420 - Manual (Page 4)

4
GUARD AGAINST KICKBACK
Follow all safety rules to help avoid kick-
back and other forces which can result in
serious injury.
Kickback Path
Avoid Obstructions
Clear The Working Area
WARNING: Avoid kickback which
can result in serious injury. Kickback is
the backward, upward or sudden for-
ward motion of the guide bar occurring
when the saw chain near the upper tip 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. Contacting a foreign object in
the wood can also result in loss of chain
saw control.
S
Rotational Kickback can occur when
the moving chain contacts an object at
the upper tip of the guide bar. This con-
tact can cause the chain to dig into the
object, which stops the chain for an
instant. The result is a lightning fast,
reverse reaction which kicks the guide
bar up and back toward the operator.
S
Pinch-Kickback can occur when the
the wood closes in and pinches the
moving saw chain in the cut along the
top of the guide bar and the saw chain
is suddenly stopped. This sudden
stopping of the chain results in a rever-
sal of the chain force used to cut wood
and causes the saw to move in the op-
posite direction of the chain rotation.
The saw is driven straight back toward
the operator.
S Pull-In can occur when the moving
chain contacts a foreign object in the
wood in the cut along the bottom of the
guide bar and the saw chain is sud-
denly stopped. This sudden stopping
pulls the saw forward and away from
the operator and could easily cause
the operator to lose control of the saw.
REDUCE THE CHANCE OF
KICKBACK
The following precautions should be fol-
lowed to minimize kickback:
S Recognize that kickback can happen.
With a basic understanding of kickback,
you can reduce the element of surprise
which contributes to accidents.
S Never let the moving chain contact
any object at the tip of the guide bar.
S
Keep working area free from obstruc-
tions such as other trees, branches,
rocks, fences, stumps, etc. Eliminate
or avoid any obstruction that your saw
chain could hit while cutting.
S When cutting a branch, do not let the
guide bar contact another branch or
other objects around it .
S Keep saw chain sharp and properly
tensioned. A loose or dull chain can in-
crease the chance of kickback. Follow
manufacturer’s chain sharpening and
maintenance instructions. Check ten-
sion at regular intervals, but never with
engine running. Make sure bar mount-
ing nuts are securely tightened.
S Begin and continue cutting at full
speed. If the chain is moving at a slow-
er speed, there is greater chance of
kickback occurring.
S Use extreme caution when re-enter-
ing a cut.
S Do not attempt cuts starting with the tip
of the bar (plunge cuts).
S
Watch for shifting logs or other objects
that could close a cut and pinch or fall
onto chain.
S Use the specified Reduced-Kickback
Guide Bar and Low Kickback Chain.
Avoid Pinch--Kickback:
S
Be extremely aware of situations or ob-
structions that can cause material to
pinch the top of or otherwise stop the
chain.
S Do not cut more than one log at a time.
S
Do not twist the saw as the bar is with-
drawn from an undercut when bucking.
Avoid Pull-In:
S
Always begin cutting with the saw at
full speed and the saw housing
against wood.
S
Use wedges made of plastic or wood.
Never use metal to hold the cut open.
MAINTAIN CONTROL
Never Reverse
Hand Positions
Correct Position Correct Grip Incorrect Grip
Keep a firm grip
with both hands,
left thumb under
handle