Stihl MS 172 User Manual

► Shout a warning.
0000-GXX-1256-A0
1.
2.
3.
4.
5.
► Apply the spiked bumper at the same height
as the felling cut and use it as a pivot.
► Hold the saw horizontally and swing it into the
felling cut as far as possible.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of stabilizing
strap.
► Move to the other side of the tree.
► Plunge the guide bar into the felling cut at the
same height.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of stabilizing
strap.
6.
0000-GXX-1257-A0
► Insert a felling wedge. The felling wedge must
match the tree diameter and the width of the
felling cut.
► Shout a warning.
► With outstretched arms, cut through the stabi‐
lizing strap horizontally from outside at the
same level as the felling cut.
The tree falls.
11.4.9 Felling a small diameter leaner
A leaner is felled with a felling cut and holding
strap. This felling cut must be performed if the
tree diameter is less than the guide bar’s length.
► Shout a warning.
0000-GXX-1258-A0
1.
2.
► Plunge the guide bar into the felling cut until it
is visible at the other side of the trunk,
11.4.5.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of holding strap.
0000-GXX-1259-A0
► Shout a warning.
► With arms outstretched, cut through the hold‐
ing strap from outside at a downward angle.
The tree falls.
11.4.10 Felling a large diameter leaner
A leaner is felled with a felling cut and holding
strap. This felling cut must be performed if the
tree diameter is greater than the guide bar’s
length.
► Shout a warning.
0000-GXX-1260-A0
3.
2.
1.
5.
6.
4.
► Apply the spiked bumper behind the holding
strap at the same height as the felling cut and
use it as a pivot.
► Hold the saw horizontally and swing it into the
felling cut as far as possible.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of holding strap.
► Move to the other side of the tree.
English 11 Operating the Saw
22 0458-200-0121-B

Stihl MS 172 Specifications

General

Sound pressure level	100 dB(A)
Sound power level	113 dB(A)
Displacement	31.8 cc (1.9 cu in)
Saw chain pitch	3/8"
Recommended bar length	30-35 cm (12-14 in)