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30
Cutting Techniques
(Felling, Limbing Bucking)
Section 9
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32
OPERATING INSTRUCTIONS
Always follow the safety precautions. The chain
saw must only be used for cutting wood. It is
forbidden to cut other types of material. Vibrations
and kickback vary with different materials; the
safety requirements and regulations would not be
respected. Do not use the chain saw as a lever for
lifting, moving or splitting objects. Do not lock it
over fixed stands. Do not attach to this product
any form of after-market product, attachment or
tool that is not specifically designed or
recommended by the manufacturer.
When using the chain saw for the first time, make several
cuts in a small trunk in order to become familiar with the
saw in action. Always use full throttle when cutting with
the saw, regardless of the size of the timber. Never push
down on the saw when cutting. The weight of the saw
alone enables it to cut properly with minimum effort.
Never cut in high wind, bad weather, when visibility
is poor or in very high or low temperatures. Always
check the tree for dead branches which could fall
during the felling operation.
TREE FELLING
Study the tree and surrounding area before starting to
cut. Clear the work area before beginning to cut.
Prepare the widest possible path of retreat for when the
tree falls (Fig. 29). Cut off any branches at the bottom of
the trunk up to a height of about 2 meters. Make a 45
degree notch on the face of the tree, in the direction it
will fall. The depth of the notch should never exceed 1/4
of the diameter of the trunk (1 - Fig. 30). About 10 cm
(4”) higher up the trunk make a cut down towards the
first cut, in order to extract a wedge. This is the mouth
of the hinge, and is the direction in which the tree will fall
(2 - Fig. 30).