Jonsered CS 2138 Chainsaw User Manual


 
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S Mix and pour fuel in an outdoor area onbare
ground; store fuel in a cool, dry, well venti-
lated place; and use an approved, marked
container for all fuel purposes. Wipe up all
fuel spills before starting saw .
S Move at least 10 feet (3 meters) from fuel-
ing site before starting engine.
S Turn the engine off and let saw cool in a
non-combustible area, not on dry leaves,
straw, paper, etc. Slowly remove fuel cap
and refuel unit.
S Storetheunitand fuelin anarea wherefuel
vapors cannot reach sparks or open
flames from water heaters, electric motors
or switches, furnaces, etc.
KICKBACK
WARNING: A void kickback which
can result in serious injury. Kickback is the
backward,upwardor sudden forwardmotion
of the guide bar occurring when the saw
chain near theupper tip of theguide barcon-
tacts any object such as a log or branch, or
when the wood closes in and pinches the
saw chain inthe cut. Contacting aforeign ob-
ject in t he wood can also result in loss of
chain saw control.
S Rotational Kickback canoccur whenthe
moving chain contacts an object at the up-
per tip of the guide bar . This contact 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 to-
ward 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 reversal of the chain
force u sed to cut wood and causes the
saw tomove inthe oppositedirection ofthe
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 a long the bottom o f the guide bar a nd the
saw chain is suddenly stopped. This sudden
stopping pulls the saw forward and away
from the ope rator a nd could easily cause the
operator to lose control of the saw .
Avoid Pinch--Kickback:
S Be extremely aware of situations or obstruc-
tions that can cause m aterial 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 t he saw as the bar is with-
drawn from an undercut when bucking.
Avoid Pull--In:
S Always begin cutting with the engine 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.
Kickback Path
Avoid obstructions
Clear the working area
REDUCETHECHANCEOF
KICKBACK
S Recognize that kickback can happen.
With a basic under standing of kickback,
you can reduce the element of surprise
which contributes to accidents.
S Never let themoving chaincontact any ob-
ject at the tip of t he guide bar .
S Keep the working area free from obstruc-
tions such as o ther trees, branches, rocks,
fences, stumps, etc. Eliminate or avoid any
obstruction that your saw chain could hit
while you are cutting through a particular log
or branch.
S Keep your saw chain sharp and properly
tensioned. A loose ordull chain can increase
the chance of kickback occurring. Follow
manufacturer’s chain sharpening and main-
tenance instructions. Check tension at regu-
lar intervals with the engine stopped, never
with the engine running. M ake sure the bar
clamp nuts are securely tightened after ten-
sioning the chain.
S Beg in and continue cutting at full speed. If
the chain is moving at a slower speed,
there is g reater chance of kickback occur-
ring.
S Cut one log at a time.
S Use extreme caution when re-entering a
previous cut.
S Do not attempt cuts starting with the tip of
the bar (plunge cuts).
S Watch f or shifting logs or other forces that
could close a cut and pinch or fall into chain.
S Use the Reduced--Kickback Guide Bar
and Low--Kickback Chain specified for
your saw.
MAINTAIN CONTROL
Never reverse
hand positions
Stand to the left of
the saw