Cutting Methods; Tree Felling Techniques; Felling Large Trees; Notch Cut And Felling The Treee - Husqvarna 136 Operator's Manual

wristagainst t hehandguard without r eleas-
ingyour griparoundthe fronthandle. T he
chainshouldstopimmediately.
Inertia activating function control
_k, WARNING:
When performing the fol-
lowing procedure, the engine must be turned
off.
The chain brake must be checked several
times daily. Hold the chain saw approximate-
ly 14" (35 cm) above a stump or otherfirm ob-
ject. Release your grip on the front handle
and let the saw, by its own weight, rotate
around the rear handle. When the tip of the
bar hits the stump, the brake should activate.
IMPORTANT POINTS
• Check chain tension before first use and
after 1 minute of operation. See CHAIN
TENSION in the ASSEMBLY section.
• Cut wood only. Do not cut metal, plastics,
masonry, non-wocd building materials, etc.
• Stop the saw if the chain strikes a foreign
object. Inspect the saw and repair parts as
necessary.
• Keepthechainoutofdirtandsand. Evena
small amountofdirt will quickly dull a chain
and increase the possibility of kickback.
• Practice cutting a few small logs using the
following techniques to get the "feel" of us-
ing 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 en-
tire time you are cutting.
• Allow the chain to cut for you. Exert
only light downward pressure.
• Releasethe throttletrigger as soon as
the cut is completed, allowing the en-
gine to idle. If you run the saw at full
throttle without a cutting load, unnec-
essary wear can occur.
• 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
_;IWARNING:
Check for broken or
dead branches which can fall while cutting
causing serious injury. Do not cut nearbuild-
ings or electricalwires if you do not know the
directionoftree fall, norcut at night sinceyou
will not be ale to see well, nor during bad
weathersuch as rain, snow, or strong winds,
etc. If the tree makes contact with any utility
line, the utility company should be notified
immediately.
• Carefullyplan your sawingoperationin ad-
vance.
• Cleartheworkarea. You needacleararea
all aroundthetreeso you can havesecure
footing.
• The chain saw operator should keep on
the uphill side of the terrain as the tree is
likelyto rollor slidedownhillafterit is felled.
• 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:
• The wind direction and speed.
• The lean of the tree. The lean of a tree
might not be apparent due to uneven or
slopingterrain. Use a plumb or level to de-
termine the direction of tree lean.
• Weight and branches on one side.
• Surroundingtrees and obstacles.
Look for decay and rot. Ifthetrunk 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 distance of 2-1/2 tree lengths
from the nearest person or other objects. En-
gine noise can drown out a warning call.
Remove dirt, stones, loose bark, nails, sta-
ples, and wire from the tree wherecuts are to
be made.
Plan a clear retreat path to the rear and diag-
onal to the line of fall.
_X_z,_. Plan a clear retreat path
}.... LJ""'_- Direction of Fall
FELLING LARGE TREES
(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 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,
removethem beforemakingthenotch. If us-
ing saw to remove buttress roots, keep saw
chain from contacting ground to prevent dull-
ing of the chain.
NOTCH CUT AND FELLING THE
TREE
• Make notch cut by cutting the top of the
notch first. Cut through 1/3 of the diameter
of the tree. Next complete the notch by cut-
ting the bottom of the notch. See illustra-
tion. Once the notch is cut remove the
notch of wood from the tree.
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