Stihl MS 191 T Manual De Instrucciones página 20

B = Pushback:
Pushback occurs when the chain on the
top of the bar is suddenly stopped when
it is pinched, caught or encounters a
foreign object in the wood. The reaction
of the chain drives the saw straight back
toward the operator and may cause loss
of saw control. Pushback frequently
occurs when the top of the bar is used
for cutting.
To avoid pushback
1. Be alert to forces or situations that
may cause material to pinch the top
of the chain.
2. Do not cut more than one log at a
time.
3. Do not twist the saw when withdraw-
ing the bar from a plunge cut or
underbuck cut because the chain
can pinch.
MS 191 T
!
Warning!
This chainsaw equipped with a top
handle is designed specifically for tree
surgery and maintenance. Due to the
special handle design (closely spaced
handles), there is an increased risk of
B
injury from loss of control.
For this reason this special chainsaw
should be used only for work in a tree by
persons trained in special cutting and
working techniques. This type of
chainsaw is not designed for cutting
work on the ground, such as felling and
bucking. Because this chainsaw is not
intended for use on the ground, this
manual does not contain instructions for
felling or for limbing and bucking felled
trees. For instructions on these
techniques when using other STIHL
chainsaw models, see the owners'
manuals for these saws or the STIHL
Chainsaw Safety Manual, which is
available free from your STIHL servicing
dealer.
English / USA
A
1
2
B
B
2
1
A
Cutting techniques:
– Cut straight through thin limbs.
– Support and secure heavy
branches with ropes.
– Limbs under strain create risk of
pinching! Always start relieving cut
(1) at compression side (A). Then
make bucking cut (2) at tension side
(B).
– If the saw pinches, stop the engine
and remove it from the limb.
If conditions allow, work from a lift
bucket.
19