Instruction Manual

B
B
0000-GXX-1246-A0
► Observe the following points when planning
escape path (B):
–
Escape path (B) at an angle of 45° to direc‐
tion of fall (A).
–
No obstacles on the escape path (B).
–
The top of the tree can be observed.
–
If the escape path (B) is on a slope, it must
be parallel to the slope.
12.4.2 Preparing work area at base of tree
► Remove obstacles from work area at tree
base.
► Remove growth from tree base.
0000-GXX-1247-A0
► If the tree has large, healthy buttress roots:
Make vertical cut first and then a horizontal
cut, and remove the resulting piece.
12.4.3 Cutting the felling notch
The felling notch determines the direction in
which the tree falls. Country-specific standards
for making the felling notch must be observed.
90°
0000-GXX-4448-A0
► Position the saw so that the felling notch is an
right angles to the direction of fall and the saw
is close to the ground.
► Make the horizontal cut.
► Make the angle cut at 45° to the horizontal cut.
0000-GXX-1250-A0
► If the wood is sound and long-fibered:
Observe the following points when making
sapwood cuts:
–
The cuts must be the same at both sides.
–
The cuts must be at the same height as the
bottom of the felling notch.
–
The width of the cuts is 1/10 of the trunk
diameter.
The trunk does not splinter when the tree falls.
12.4.4 Basic information on felling cut
Ø
1/10
0000-GXX-1251-A1
C
C
E
G
C Felling notch
The felling notch determines the direction of
fall.
D Hinge
The hinge helps control the falling tree. The
width of the hinge is 1/10 of the trunk diame‐
ter.
E Felling cut
The tree is felled with the felling cut. The fell‐
ing cut is 1/10 of the trunk diameter (at least 3
cm) above the bottom of the felling notch.
F Stabilizing strap
The stabilizing strap supports the tree and
helps prevent it from falling prematurely. The
width of the stabilizing strap is 1/10 to 1/5 of
the trunk diameter.
G Holding strap
The holding strap supports the tree and helps
prevent it from falling prematurely. The width
of the holding strap is 1/10 to 1/5 of the trunk
diameter.
12.4.5 Plunge cutting
Plunge cutting is a technique required for felling.
English
12 Operating the Saw
20 0458-716-0121-D