Echo CS-3510 Operator's Manual page 38

OPERATION
Before cutting, clear the area
around the tree. You will need good
footing while working and you
should be able to work the saw
without hitting any obstacles. Next,
select a path of retreat. When the
tree begins to fall you should retreat
away from the direction of fall at a
45-degree angle and at least 3 m
(10 feet) from the trunk to avoid the
trunk kicking back over the stump.
Begin the cut on the side to
which the tree is to fall. Cut a
notch about 1/3 of the way into
the tree. The position of this
notch is important since the
tree will try to fall "into" the
notch. The felling cut is made
on the side opposite the notch
and at a level about 5 cm (2
in.) above the bottom of the
notch. Do not try to cut through
to the notch with the felling cut.
The remaining wood between
the notch cut and felling cut
about 5 cm (2 in.) will act as a
hinge when the tree falls,
guiding it in the desired
direction. When the tree starts to fall, kill the engine, place the saw on the
ground and make your retreat quickly.
To fell big trees with a diameter
exceeding twice the bar length, start
the notching cuts from one side and
draw the saw through to the other
side of the notch. Start the back cut
on one side of the tree, pivoting the
saw through to form the desired
hinge on that side. Then remove the
saw for the second cut. Insert the
saw in the first cut, very carefully so
as not to cause kickback. The final
cut is made by drawing the saw forward in the cut to reach the hinge.
38
Direction
of fall
Retreat
Direction of fall
5 cm (2 in.)
First cut
Notch
Second cut
One-third tree diameter
1
CS-3510
3 m (10 feet)
Retreat
45°
45°
Not this way
Hinge
Felling cut
5 cm (2 in.)
3
2
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