Husqvarna 137 Manual De Instrucciones página 5

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cause the chain t odig into the object,
which stops the chah_
for a ninstant.
The
result isalightning
fasL r everse
reaction
which kicks the guide bar up and b ack to-
ward the operator.
• Pinch-Kickback
can occur when the the
wood c loses inand pinches
the moving
saw chain i nthe cut a long the top ofthe
guide bar a nd t he saw chain issuddenly
stopped.
This sudden stopping
ofthe
chain r esults ina reversal
ofthe chain
force u sed t ocut w ood a nd causes the
saw to move in the o pposite
direction
of t he
chain rotation,
The s aw isdriven straight
back toward the operator.
• Pull4n can occur when the moving
chain
contacts
aforeign
object inthe wood inthe
cut along the b ottom
of t he g uide bar and t he
saw chain issuddenly
stopped,
This sudden
stopping
pulls the saw forward
and away
from t he o perator
and c ould easily cause the
operator
tolose control
of t he saw.
Avoid Pinch-Kickback:
• Be extremely
aware ofsituations
orob-
structions
that can cause material
to pinch
the top oforotherwise
stop t he chain,
• Do not cut m ore than o ne l og atatime,
• Do not t wist the saw as the bar i swith-
drawn from an undercut
when bucking,
Avoid P ull-In:
• Always
begin cutting with t he engh_e
at f ull
speed and t he s aw housing
against
wood.
• Use wedges made ofplastic orwood.
Never use metal tohold t he cut o pen.
'X_
Kickback
Path
REDUCE
THE
CHANCE
OF
KICKBACK
• Recognize
that
kickback
can
happen.
With a basic understanding
of kickback,
you can reduce
the element
of surprise
which contributes
to accidents,
• Never let the moving chain contact any ob-
ject at the tip of the guide bar,
• Keep the 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 you are cutting,
When
cutting
a
branch,
do not let the guide
bar contact
branch or other objects around
it,
• Keep your saw chain sharp and properly
tensioned.
A loose or dull chain can in-
crease the chance
of kickback
occurring,
Follow
manufacturer's
chain
sharpening
and maintenance
instructions.
Check ten-
sion at regular
intervals
with
the engine
stopped,
never with the engine
running.
Make sure the chain brake nuts are se-
curely tightened
after tensioning
the chain.
• Begin and continue cutting at full speed,
If
the chain is moving at a slower speed, there
is greater chance of kickback occurring,
• Cut one log at a time,
• Use extreme
caution
when re-entering
a
previous
cut.
• Do not attempt cuts starting
with the tip of
the bar (plunge cuts),
• Watch for shifting logs or other forces that
could close a cut and pinch or fail into chain.
• Use
the Reduced-Kickback
Guide
Bar
and
Low-Kickback
Chain
specified
for
your saw,
MAINTAIN
CONTROL
Stand to the
left of the,
Never reverse"
|_"
hand positions
Thumb
on
underside
of
handlebar
X
Elbow locked
Thumb on underside
of
handlebar
• Keep a good, firm grip on the saw with both
hands
when
the engine
is running
and
don't let go, A firm grip wili help you reduce
kickback
and maintain
control of the saw.
Keep the fingers
of your left hand encir-
cling and your left thumb
under the front
handlebar.
Keep your right hand complete-
ly around the rear handle whether
your are
right handed or left handed.
Keep your left
arm straight
with the elbow locked.
• Position your left hand on the front handle-
bar so it is in a straight
line with your right
hand
on the
rear handle
when
making
bucking
cuts.
Never reverse right and left
hand positions
for any type of cutting,
• Stand with your weight evenly balanced
on
both feet,
• Stand slightly to the left side of the saw to
keep your body from being in a direct line
with the cutting chain,
• Do not overreach.
You could be drawn or
thrown off balance and lose control of the
saw.
• Do not cut above shoulder height.
It is diffi-
cult
to maintain
control
of saw
above
shoulder
height.

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