Warning!
Be extremely careful with partially fallen
trees
which
are
poorly supported.
When the tree hangs or
for some other reason does not fall
completely, set
the
saw
aside and pull the
tree
down with
a
cable winch, block and tackle
or tractor.
If
you
try to cut
it
down with your saw, you may be injured.
Sectioning
Method
Warning!
Felling a tree that has a diameter greater than the length of
the
guide bar requires
use
of either the sectioning
or
plunge-cut method. These
methods
are
extremely danger-
ous because they
involve the use of the nose of the guide
bar and
can
result in kickback. Only properly trained pro-
fessionals should attempt these techniques.
For the sectioning method (ill. 25) make the first
part
of the
felling cut with the guide bar fanning in toward the hinge.
Then, using
the bumper spike as a pivot, reposition the
saw
for the
next cut.
Avoid repositioning the
saw more
than
necessary.
When repositioning for the
next cut,
keep
the guide bar fully engaged
in the kerf to keep the felling
cut straight. If the saw begins to pinch, insert a wedge to
open the cut. On the last cut, do not cut the hinge.
Plunge-Cut
Method
Timber having a diameter more than twice
the length of
the guide bar requires the use of the plunge-cut method
before making the felling
cut.
First,
cut a
large, wide felling notch. Make
a
plunge
cut
in
the
center of the notch.
The plunge cut is made with the guide bar nose. Begin the
plunge
cut
by
applying the lower portion of the
guide bar
nose to
the
tree at an
angle (ill. 26). Cut
until the depth of
20 the kerf is
about the same as the width of the guide bar
28
29
27
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