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OPERATING
TIPS
• Check chain tension
before first use
and after 1 minute of operation,
and
each time before you start the chain
saw. See CHAIN TENSION in the
MAINTENANCE 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 allow
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. Exert
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,
allowing
the engine to idle. Ifyou run the saw
at full throttle without a cutting load,
unnecessary
wear can occur to the
chain, bar, and engine.
To maxi-
mize 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.
TREE FELLING
TECHNIQUES
_IkWARNING:
Check for broken or
dead branches which can fall while cut-
ting causing serious injury. Do not cut
near buildings or electrical wires 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
the tree makes contact with any utility
line, the utility company should be noti-
fied immediately.
• Carefully
plan your sawing operation
in advance.
• Clear the work area. You need a clear
area all around the tree so you can
have secure footing.
• 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 is felled.
• Study the natural conditions that can
cause the tree to fall in a particular di-
rection.
Natural conditions that can cause a tree
to fall in a particular direction include:
• The wind direction and speed.
• The lean ofthe
tree. The lean of a
tree might not be apparent
due to un-
even or sloping terrain. Use a plumb
or level to determine
the direction
of
tree lean.
• Weight and branches on one side.
• 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-
tance of 2-1/2tree lengths from the near-
est person or other objects. Engine
noise can drown out a warning call.
Remove dirt, stones,
loose bark, nails,
staples, and wire from the tree where
cuts are to be made.
Plan a clear retreat path to the rear
and diagonal to the line of fall.
/ Plan a clear retreat path
I'
(,.
,_--_-
Direction of Fall
45" /,,.
"_/,e¢
FELLING
LARGE TREES
(6 inches (15 cm) 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 desired direction
of fall. After
a felling cut is made on the opposite
side of tree, the tree will tend to fall into
the notch.
11
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