Scheppach CSE2500 Originalbetriebsanleitung Seite 31

Undercut and felling of the tree (Fig. B-C)
• Saw a wedge with a depth of 1/3 of the tree
diameter at a right-angle to the falling direction.
Make the lower horizontal wedge cut first (Fig. B,
No. 1). This will prevent the saw chain or the guide
bar becoming jammed when the second wedge cut
(Fig. B, No. 2) is made.Now remove the excised
wedge.
• Next, you can run the felling cut (Fig. B, Pos.
3) on the opposite side of the tree. Do this at
approximately 5 cm above the centre of the notch.
Make the dropping cut parallel to the horizontal
wedge cut. For the dropping cut (No. 3), saw only
to a depth so that a bridge (No. 4) (holding wood)
remains which can act as a hinge. The bridge
prevents the tree from turning and falling in the
wrong direction. Do not cut through the bridge.
Note: When the dropping cut is made close to the
bridge, the tree should start falling. If it looks like
the tree may possibly not fall in the desired direction
or it leans back and traps the saw chain, stop the
dropping cut and use wedges of wood. plastic or
aluminium to open the cut and to tilt the tree into the
required falling direction.
When the tree starts falling, remove the chainsaw
from the cut, turn it off, put it away and leave the
danger zone via the planned escape route. Look out
for falling branches and do not trip.
• Be alert to signs that the tree is starting to fall:
cracking sounds, widening of the felling cut, or
movement in the upper branches.
• To avoid injury, do not cut down a partially felled
tree with your saw. Pay special attention to
partially felled trees that may be poorly supported.
If a tree does not fall completely, set the saw aside
and pull with a cable winch, block and tackle, or
tractor.
Sawing a felled tree (Bucking)
The term „BUCK" means to cut a felled tree trunk into
the desired log length.
Caution: Do not stand on the log while it is being cut.
Any portion can roll, and you may lose your footing
and control over the device. Never run the saw on
sloping ground. Make sure you have secure footing
and distribute your body weight evenly on both feet. If
possible, put branches, beams or wedges under the
tree to support it.
Important Notes
• Always only cut one log at a time.
• Be careful when cutting splintery wood. You could
be hit by sharp wood particles.
• Cut small logs or branches on a sawhorse. When
cutting logs, another person should hold the trunk.
Do not secure the trunk with your leg or foot.
• If you use the saw in places where trunks and roots
are tangled, drag the logs into a clear spot, and lift
the cleared logs first.
Different cuts for BUCKING (Fig. D)
Caution: If the saw is clamped into a log, do not pull
it out by force. You risk losing control of the device,
thereby resulting in injury and / or damage to the
saw. Hold the saw, and drive a plastic or wood -
wedge into the cut until the saw can be pulled out
easily. Position the saw carefully and allow it to cut
again. Start the saw if it is trapped in a trunk.
Upper section (Fig. E, Item 1)
Position the saw at the upper end of the log. With the
overcut apply only slight downward pressure.
Sub-section (Fig. E, item 2)
Place the undercut at the bottom of the trunk, holding
the top of the saw down against the log. Practice the
undercut; it is just as easy to train from the top. Hold
the saw firmly and maintain control. The saw will
push backwards (towards you).
Caution: Never hold the saw upside down for an
undercut. In this position, you have no control over
the device. Always execute the first cut on the
compression side of the log. The compression side
of a log is where the pressure of the root weight is
concentrated.
Bucking without supports (Fig. F)
• When the whole length of the tree trunk is stable
and even, start sawing from the top (No. 1).
• Make sure you do not saw into the ground.
Trunk cutting, supported on one end (Fig. G)
• When the tree trunk is propped up on one end,
make the first cut (No. 1) from underneath (1/3 of
the trunk diameter) in order to prevent splitting.
• The second cut is made from the top (2/3 of the
diameter) in the same line as the first cut to prevent
the saw from becoming jammed.
Trunk cutting, supported on both ends (Fig. H)
• When the tree trunk is propped up on both ends,
make the first cut (No. 1) from the top (1/3 of the
trunk diameter) in order to prevent splitting.
• The second cut is made from underneath (2/3 of
the diameter) in the same line as the first cut to
prevent the saw from becoming jammed.
Limbing and Trimming
Attention: Always pay attention to, and protect
yourself against kickback. Never let the moving chain
at the top of the guide bar come into contact with
other branches or objects when limbing or trimming.
Such contact can cause serious injury.
Attention: Climb the tree for pruning or trimming. Do
not stand on ladders, platforms, etc. as you may lose
your balance and lose control of the device.
Important Notes
• Work slowly, and hold the saw firmly with both
hands. Ensure safe standing position and
balance.
GB 31