Stihl MS 170 Manual De Instrucciones página 25

English / USA
First, cut a large, wide felling notch.
Make a plunge cut in the centre 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. Cut until
the depth of the kerf is about the same
as the width of the guide bar. Next, align
the saw in the direction in which the
recess is to be cut.
With the saw at full throttle, insert the
guide bar in the trunk.
Enlarge the plunge cut as shown in the
illustration.
!
Warning!
There is an extreme danger of kickback
at this point. Extra caution must be taken
to maintain control of the saw. To make
the felling cut, follow the sectioning
method described previously.
24
If you are inexperienced with a
chainsaw, plunge-cutting should not be
attempted. Seek the help of a
professional.
Limbing
Limbing is removing the branches from a
fallen tree.
!
Warning!
There is an extreme danger of kickback
during the limbing operation. Do not
work with the nose of the bar. Be
extremely cautious and avoid contacting
the log or other limbs with the nose of the
guide bar.
Do not stand on a log while limbing it -
you may slip or the log may roll.
Start limbing by leaving the lower limbs
to support the log off the ground. When
underbucking freely hanging limbs, a
pinch may result or the limb may fall,
causing loss of control. If a pinch occurs,
stop the engine and remove the saw, by
lifting the limb.
!
Warning!
Be extremely cautious when cutting
limbs or logs under tension (spring
poles). The limbs or logs could spring
back toward the operator and cause loss
of control of the saw and severe or fatal
injury to the operator.
Bucking
Bucking is cutting a log into sections.
!
Warning!
1. When bucking, do not stand on the
log. Make sure the log will not roll
downhill. If on a slope, stand on the
uphill side of the log. Watch out for
rolling logs.
MS 170, MS 180, MS 180 C