Stihl 090 Instruction Manual / Owners Manual page 17

16
24
A'iways keep to the side of the
f8Jling
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 failing
limbs.
Warning! :
Be
extremely
careful with
partially
fallen trees which are
poorly
supported.
When the tree
h~;or
19r
~
other reason does not
fall' completelY, set"the
saw
asfde'and pull the
tree
down
with a
cabIe·wlnch,btockand tackle
or tJactor.lf
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
requl~
use of either the sectioning or
plunge-cut method. These methods' are extremely
dangerous because they InvolVe the use of the nose of
the guide bar and can result In kickback. Only property
trained professionals
should attempt· these techniqueS.
25
Forthe
tteeHOriing methOd
(HI. 24) make the first cut with the
guide bar
fanning
tn toWard
the·
hinge. Then,usmgthe
bumper spike
as a pivot, reposition the saw for the next cut.
Avoid reposftioning the
saw
more than necessary.
When
r8poSltiori!rig
fci
the
11Et~ ~
ic8ep
'the guide
~r
.i¥!Iy
engaged
in the kerr
to
keep
the
fettlng cut strafght If
the
saW
begins
to
pinCh. inSert
a w8dge
to open
the
cut. On
the
~
cut. dO
not
cut
the hinge.'
Plunge-Cut
~
Tmber
haVIng
a diameter more than tWice the !ength Of
the gUKJe bar reqUires the use
of
the
plunge-(x.it method
before
making
th.e
f8lHngcUt . .
First.
cUt
a large. wide nOtch. Make a plunge-
cut
In the
center of the
notCh. . . .
The- plunge
cut
is made with the guide'
~
nose. BegIn
the plunge.
cUt
by
'applylitg
the
lower
portiOn of the guide
bei
nose
to
the
tree at
an angle (ill.
25)~
Cut until the
dePth
of the kerf Is about the same as the width of the guide bar