Stihl MSA 300.0 Instruction Manual page 32

English
► Be aware of conditions such as wind, limb and foliage
structure, tree lean, the slope of the terrain and other
factors that could alter the direction of fall.
► Cut down at a 45° angle to a depth of approximately 1/5 to
1/4 of the trunk diameter.
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When making the notch, use the gunning sight (1) on the
saw to check the desired direction of fall:
► Place the felling notch perpendicular to the line of fall.
Position the saw so that the gunning sight (1) points
exactly in the direction you want the tree to fall.
► Make a horizontal cut that meets the bottom of the first cut.
► Remove the resulting 45° piece. The size of the wedge will
vary by tree size. The larger the tree, the larger the wedge.
8.6.4 Open-faced Notch
For an open-faced notch:
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8 Proper Techniques for Basic Bucking, Limbing, Pruning and Felling
► The felling notch determines the direction of the tree's fall.
Make the felling notch perpendicular to the line of fall you
have determined, close to the ground.
► Be aware of conditions such as wind, limb and foliage
structure, tree lean, slope of the terrain and other factors
that could alter the direction of fall.
► Cut down at a 50° angle to a depth of approximately 1/5 to
1/4 of the trunk diameter.
► Make a second cut that meets the bottom of the first cut
from below at a 40° angle.
► Remove the resulting 90° piece. The size of the wedge will
vary by tree size. The larger the tree, the larger the wedge.
8.6.5
Sapwood cuts help prevent soft woods in summer from
splintering when they fall:
► Make cuts at both sides of the trunk, at the same height as
the subsequent felling back cut.
► Cut no more than the width of guide bar.
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8.6.6
￭ If the tip of the bar contacts a wedge that has been used
to help keep the kerf or cut open, it may cause kickback.
Wedges should be of wood or plastic and never steel,
which can damage the chain.
Sapwood Cuts
Felling Back Cut
WARNING
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