SAFETY INSTRUCTIONS
Clearing the trunk and preparing your retreatFelling cut
Remove any branches that are in the way. To do this it is best The felling cut is made from the opposite side of the tree and
to work from the top down and keep the trunk between you it must be perfectly horizontal. Stand on the left side of the
and the chain saw. Never limb above shoulder height.tree and cut on the pull stroke.
Make the felling cut about 3-5 cm (1.5-2 inches) above the
bottom directional cut.
Remove any undergrowth from the base of the tree and check Set the spike bumper (if one is Ţtted) just behind the felling
the area for obstacles (stones, branches, holes, etc.) so that hinge. Use full throttle and advance the chain/bar slowly into
you have a clear path of retreat when the tree starts to fall. the tree. Make sure the tree does not start to move in the
Your path of retreat should be roughly 135 degrees away from opposite direction to your intended felling direction. Drive a
the intended felling direction.wedge or breaking bar into the cut as soon as it is deep
enough.
Finish the felling cut parallel with the directional cut line so
Fellingthat the distance between them is at least 1/10 of the trunk
Felling is done using three cuts. First you make the directional diameter. The uncut section of the trunk is called the felling
cuts, which consist of the top cut and the bottom cut, then you hinge.
Å¢nish with the felling cut. By placing these cuts correctly you
can control the felling direction very accurately.
Directional cuts
To make the directional cuts you begin with the top cut. Stand
to the right of the tree and cut on the pull stroke.
The felling hinge controls the direction that the tree falls in.
Next make the bottom cut so that it Ţnishes exactly at the end
of the top cut.
All control over the felling direction is lost if the felling hinge is
too narrow or non-existent, or if the directional cuts and felling
cut are badly placed.
The directional cuts should run 1/4 of the diameter through
the trunk and the angle between the top cut and bottom cut
should be 45°.
When the felling cut and directional cut are complete the tree
should start to fall by itself or with the aid of a felling wedge or
breaking bar.
The line where the two cuts meet is called the directional cut
line. This line should be perfectly horizontal and at right
angles (90°) to the chosen felling direction.
English � 21 |
ACEC
