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CHAIN
B RAKE
_EWARNING:
Ifthe brake band is
worn too thin it may break when the
chain brake is triggered.
With a broken
brake band, the chain brake will not
stop the chain. The chain brake must
be replaced if any part is worn to less
than 0.020" (0.5 mm) thick. Repairs on
a chain brake should be made by your
Sears Service Center. Take your unit
to the place of purchase
or to the near-
est Sears Service Center.
• This saw is equipped with a chain
brake. The brake is designed
to stop
the chain if kickback occurs.
• The inertia-activated
chain brake is
activated
if the front hand guard is
pushed forward, either manually
(by
hand) or automatically
(by sudden
movement).
• If the brake is already activated,
it is
disengaged
by pulling the front hand
guard back toward the front handle
as far as possible.
• When cutting with the saw, the chain
brake must be disengaged.
Disengaged
Engaged
., ::::
Braking function
control
CAUTION:
The chain brake must be
checked
several times daily. The en-
gine must be running when performing
this procedure.
This is the only
instance when the saw should be
placed on the ground with the engine
running.
Place the saw on firm ground. Grip the
rear handle with your right hand and
the front handle with your left hand.
Apply full throttle by fully depressing
the throttle trigger. Activate the chain
brake by turning your left wrist against
the hand guard without releasing
your
grip around the front handle. The chain
should stop immediately.
Inertia activating
function
control
,_WARNING:
When
performing
the following
procedure,
the engine
must be turned off.
Grip the rear handle with your right hand
and the front handle with your left hand.
Hold the chain saw approximately
14
inches (35 cm) above a stump or other
wooden surface. Release your grip on
the front handle and use the weight of
the saw to let the tip of the guide bar fall
forward and contact the stump. When
the tip of the bar hits the stump, the
brake should activate.
OPERATING
TIPS
• Check chain tension before first use,
after 1 minute of operation,
and each
time before you start the chain saw.
See CHAIN TENSION in the MAINTE-
NANCE section.
• Cut wood only. Do not cut metal, plas-
tics, masonry, non-wood building ma-
terials, etc.
• Stop the saw if the chain strikes a
foreign object. Inspect the saw and
repair or replace parts as necessary.
If the chain jumps off the guide bar,
inspect the chain for damaged
drive
links before reinstalling.
Burrs on
drive links, which prevent them from
entering the groove of the guide bar,
can be removed with a flat file.
• Keep the chain out of dirt and sand.
Even a small amount of dirt will dull a
chain, increase the possibility of kick-
back, and require chain sharpening or
replacement.
• Practice cutting a few small logs us-
ing the following
techniques
to get
the "feel" of using your saw before
you begin a major sawing operation.
•
Squeeze the throttle trigger and al-
low the engine to reach full speed
before cutting.
•
Begin cutting with the saw frame
against the log.
•
Keep the engine at full speed the
entire time you are cutting.
• Allow the chain to cut for you. Ex-
ert only light downward
pressure.
If you force the cut, damage to the
bar, chain, or engine can result.
•
Release the throttle trigger as
soon as the cut is completed,
al-
lowing the engine to idle. If you
run the saw at full throttle without
a cutting load, unnecessary
wear
can occur to the chain, bar, and
engine. To maximize operating
efficiency,
do not run the engine
for longer
than 30 seconds at a
time at full throttle,
• To avoid losing control when cut is
complete,
do not put pressure
on
saw at end of cut.
• Stop the engine before setting the
saw down after cutting.
10
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