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9
Braking function control
CAUTION:
The chain brake must be
checked several times daily. The engine
must be running when performing this proce-
dure. This is the only instance w hen the saw
should be placed on the ground with the en-
gine running.
Place the saw on firm ground. Grip the rear
handle with yourright hand and the front han-
dle 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” (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 top of the guide
bar fall forward and contact the stump.
When the tip of the bar hits the stump, the
brake should activate.
CUTTING METHODS
IMPORTANT POINTS
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Check chain tension before first use and af-
ter 1 minute of operation. See CHAIN TEN-
SION in the ASSEMBLY s e c tio n .
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Cut w ood only. D o not cut metal, plastics,
masonry, non- w ood building materials, etc.
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Stop the saw if the chain strikesa foreign ob-
ject. Inspect the saw and repair or replace
parts as necessary.
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Keep the chain out of dir t and sand. Even a
small amount of dir t w ill quickly dull a chain
and th usincreas ethe p os s ib ility of kic k b ac k .
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Practice cutting a few small logs using the
following techniques to get the “feel” of using
your saw before you begin a major sawing
operation.
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Squeeze the throttle trigger and allow the
engine to reach full speed befor e cutting.
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Begin c utting with the saw frame against
the log.
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Keep the engine at full speed the entire
time you are cu tting .
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Allow the chain to cut for you. Exert only
light downwar d pr essure. If you force the
cut, damage to the bar, chain, or engine
can result.
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Releasethethrottle tr iggeras soonas the
cut is completed, allowing the engine to
idle. If you run the saw at full throttle with-
out a cutting load, unnecessary wear can
occur to the chain, bar, and engine.
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To avoid losing control when cut is com-
plete, do not putpressure on sawat end
of cut.
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Stop the engine before setting the saw down
after cutting .
TREE FELLING TECHNIQUES
WARNING:
Check for broken or
dead br anches which c an fall while cutting
causing serious injury. Do not cut near build-
ings or electrical w ir es if you do not know the
direction of tree fall, nor cut at night since you
will not be ale to see well, nor during bad
weather such as rain, snow, or strong winds,
etc. If th e tree ma k e s contac t w ith any utility
line, the utility c ompany should be notified im-
mediately.
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Carefully plan your sawing operation in ad-
vance.
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Clear the work area. You need a clear area
all around the tree so you can have secur e
footing.
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The chain saw operator should keep on
the uphill side of the terrain as the tree is
likely to roll or slide downhill after it isfelled.
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Study the natural conditions that can cause
the tree to fall in a particular direction.
Natural conditions that can cause a tree to
fall in a particular direction include:
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The wind direction and speed.
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The lean of the tree. The lean of a tree
might not be apparent due to uneven or
sloping terrain. Use a plumb or level to de-
termine the direction of tree lean.
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Weight and branches on one side.
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Surrounding trees and obstacles.
Look for decay and rot. If the trunk is rotted,
it can snap and fall toward the operator.
Check for broken or dead branches which
can fall on you while cutting.
Make sure there is enough room for the tree to
fall. Maintain a dis ta n c e of
2-1/2
tree lengths
from the nearest per son or other objects. En-
gine noise can dr ow n out a warning call.
Remove dirt, stones, loose bark, nails, sta-
ples, and wire from the tree where cuts are to
be made.
Plan a clear retreat path to the rear and diag-
onal to the line of fall.
Direction of Fall
45
_
Plan a clear retreat path
FELLING LARGE TREES
(6 inches in diameter or larger)
The notch method is used to fell large trees.
A notch is cut on the side of the tree in the de-
sired direction of fall. After a felling cut is
made on the opposite side of tree, the tree
will tend to fall into the notch.
NOTE:
If the tree has large buttress roots,
remove them before making the notch. If us-
ing saw to remove buttress roots, keep saw
chain from contacting ground to prevent dull-
ing of the chain.