Stihl MS 251, Instruction Manual, Page: 24 / 132

MS 251, MS 251 C
English
22
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.
D =Felling Cut
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
N
Helps control the falling tree.
N
Do not cut through the hinge – you
could lose control of the direction of
the fall.
001BA150 KN 001BA144 KN
D
D
001BA145 KN
E
E