Stihl MS 311 Manual De Instrucciones página 20

English
Making sapwood cuts
N For medium sized or larger trees
make cuts at both sides of the trunk,
at same height as subsequent
felling cut.
N Cut to no more than width of guide
bar.
This is especially important in softwood
in summer – it helps prevent sapwood
splintering when the tree falls.
18
D =Felling cut
D
Conventional and open-face technique:
N Begin 1 to 2 inches (2,5 to 5 cm)
higher than center of felling notch.
N Cut horizontally towards the felling
notch.
N Leave approx.1/10 of diameter
uncut. This is the hinge.
N Do not cut through the hinge – you
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.
E = Hinge
D
N Helps control the falling tree.
N Do not cut through the hinge – you
could lose control of the direction of
the fall.
E
E
MS 311, MS 391