Stihl MSE 250 C Instruction Manual page 20

English
Open-face Technique
Felling notch (C) – determines the
direction of the fall
For an open-face cut:
Properly place felling notch
N
perpendicular to the line of fall,
close to the ground.
Cut down at approx. 50° angle to a
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depth of approx.1/5 to 1/4 of the
trunk diameter.
Make second cut from below at
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approx. 40 degree angle.
Remove resulting 90° piece.
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18
Making Sapwood Cuts
For medium sized or larger trees
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make cuts at both sides of the trunk,
at same height as subsequent
felling cut.
Cut to no more than width of guide
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bar.
This is especially important in softwood
in summer – it helps prevent sapwood
splintering when the tree falls.
D =Felling Cut
D
Conventional and open-face technique:
Begin 1 to 2 inches (2,5 to 5 cm)
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higher than center of felling notch.
Cut horizontally towards the felling
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notch.
Leave approx.1/10 of diameter
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uncut. This is the hinge.
Do not cut through the hinge – you
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could lose control of the direction of
the fall.
Drive wedges into the felling cut where
necessary to control the fall.
WARNING
If the tip of the bar contacts a wedge, it
may cause kickback. Wedges should be
of wood or plastic – never steel, which
can damage the chain.
D
MSE 250 C