Stihl MSE 250 C Notice D'emploi page 15

Sapwood cuts
With long-fibered wood, sapwood cuts
prevent the sapwood from splintering
when felling the trunk – saw both sides
of the trunk at the level of the felling
notch base to approx. 1/10 of the
diameter of the trunk – with thicker
trunks, not more than the width of the
guide bar.
Do not use sapwood cuts on diseased
trees.
MSE 250 C
Backcutting principles
Basic dimensions
C
C E
The felling notch (C) determines the
direction of fall.
The hinge (D) functions like a real hinge
to guide the tree to the ground.
Width of hinge: approx. 1/10 of the
–
trunk diameter
Never saw through the hinge while
–
felling – otherwise the tree will fall in
a direction other than the one
planned – risk of accident!
With rotten trunks, leave a wider
–
hinge
The tree is felled with the backcut (E).
Exactly horizontal
–
1/10 (min. 3 cm) of the width of the
–
hinge (D) across the bottom of the
felling notch (C)
The holding wood (F) or safety strip (G)
supports the tree and secures it against
premature falling.
Width of strip: approx. 1/10 to 1/5 of
–
the trunk diameter
Do not cut into the strip during the
–
backcut
With rotten trunks, leave a wider
–
strip
1/10
D
Plunge cutting
For relieving cuts during bucking
–
For wood carving
–
G
1.
Use a low kickback chain and be
N
especially cautious
1. Begin the cut by applying the lower
portion of the guide bar tip – do not
use the upper portion – risk of
kickback! Cut at full strength until
the depth of the kerf is twice the
width of the guide bar
English
3.
2.
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