Makita EA3600F Manual De Empleo Y De Seguridad página 9

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2
2
= cutting down area
When felling, maintain a distance of at least 2 1/2 tree lengths from
the nearest person (see Fig. 17).
Note:
The noise of your engine may drown any warning call.
Felling instructions
First clear the tree base and work area from interfering limbs and
brush and clean its lower portion an axe (see Fig. 18).
Plan your work, ensuring an obstacle-free work area and, in the case
of felling, have at least one escape path from the falling tree prepared
in advance.
Then, establish a path of escape and remove all obstacles. This path
should be opposite to the planned direction of the fall of the tree and
at a 45° angle (Fig. 19). An alternate path must also be selected.
Place all tools and equipment a safe distance away from the tree, but
not on the escape path.
First cut
If the tree has large buttress roots, cut into the largest buttresses
45°
vertically first (horizontally next) and remove (Fig. 20).
45°
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18
Then, determine the placement of the felling notch (Fig. 21). The
felling notch when properly placed determines the direction in which
the tree will fall. It is made perpendicular to the line of fall and should
be as close to the ground as possible. Cut the felling notch to a
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depth of about one-fifth to one-fourth of the trunk diameter (Fig. 22).
It should be in no case higher than it is deep. Make the felling notch
very carefully.
Begin the felling cut slighty higher than the felling notch and on the
opposite side of the tree (Fig. 22). Then cut horizontally through
towards the felling notch. Apply the chain saw with its spikes directly
behind the uncut portion of wood and cut toward the notch (Fig. 23).
Leave approximately 1/10 of the tree diameter uncut! This is the
hinge (Fig. 23). Do not cut through the hinge because you could lose
control of the direction of the fall. Drive wedges into the felling cut
where necessary to control the direction of the fall. Wedges should
be of wood, light alloy or plastic - never of steel, which can cause
kickback and damage to the chain.
Always keep to the side of the falling tree. When the tree starts to
fall, shut off the engine, withdraw the bar and walk away on the pre-
planned escape path. Watch out for falling limbs.
Second cut
20
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Felling cut
Hinge
Direction of fall
21
Hinge
Felling notch
22
Felling notch
23