Scheppach CSP2540 Mode D'emploi page 49

So that you do not lose control of the device after the
chain exits the wood, you should not apply any pres-
sure to the saw towards the end of the cut.
Check after starting the idle setting. The cutting
blade must be stationary during idling. When the
cutter is rotating in idle, the idle speed must be
decreased (see "Setting the Idle Speed").
Turn off the device before putting it down.
Felling trees - only with relevant training
m CAUTION
Watch out for broken or dead branches which may
fall down during sawing and which could cause se-
vere injuries.
Do not saw close to buildings or power lines if you do
not know in which direction the felled tree will fall. Do
not work at night because you can see less well, or
during rain, snow and storms because the direction in
which the tree will fall cannot be anticipated.
Plan your work with the chainsaw in advance.
The working environment around the tree should be
cleared so you have secure footing.
The machine operator should always be positioned
at a higher level in the working area because the tree
will probably roll or slide down after felling.
Watch out for broken or dead branches that may fall
down and cause severe injuries.
The following conditions can influence the tree's
falling direction:
• Wind direction and speed
• Leaning of the tree - The leaning direction cannot
always be recognised because of uneven or slop-
ing ground. Determine the leaning direction of the
tree using a plumb line or a level.
• Branches growing (and therefore weight) only on
one side
• Surrounding trees or obstacles
Look out for destroyed or decayed parts of the
tree.
If the trunk is decayed, it can suddenly break and fall
on you. Make sure there is sufficient space for the
falling tree. Keep a distance of 2½ tree lengths to the
next person or other objects. The sound of the motor
can drown out warning cries.
Remove dirt, stones, loose bark, nails, brackets and
wire from the sawing area.
m Ensure you have a free escape route (Fig. A)
Position 1: Escape route
Position 2: Falling direction of the tree
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Clearing large trees is only permitted with corre-
sponding training
(20 cm diameter and up)
The undercutting method is used for felling large
trees. For this, a wedge is cut out from the side of the
tree according to the required falling direction. After
the dropping cut has been made on the other side of
the tree, it will fall in the direction of the wedge cut.
m NOTICE
If the tree has large prop/buttress roots, these should
be removed before the wedge is cut. If the saw is
used for removing the prop/buttress roots, the saw-
chain should not touch the ground so the chain does
not become blunt.
Undercut and felling the tree (Fig. B-C)
For the undercut, first cut the upper part (Pos. 1) of
the wedge (Pos. 2). Cut 1/3 of the way into the tree.
Then saw the lower part (Pos. 3) of the wedge (Pos.
2). Now remove the wedge you have cut out.
Afterwards, you can carry out the dropping cut on the
opposite side of the tree (Fig. 4). For this, start about
5 cm above the middle of the cut. In this way, there is
enough wood between the dropping cut (Pos. 4) and
the wedge (Pos. 2) so that it functions as a hinge.
This hinge is designed to guide the tree in the right
direction when falling.
m NOTICE
Before completing the dropping cut, if required, in-
crease the cut using wedges to control the direction
of the fall. Exclusively use wood or plastic wedges.
Steel or iron wedges can cause kickback and dam-
age to the device.
Be aware of signs that the tree is beginning to fall:
Cracking sounds, the dropping cut opening or move-
ment in the upper branches.
When the tree begins to fall, stop the saw, put it down
and leave immediately via your escape route.
To prevent injuries, do not cut partly felled trees with
your saw. Beware especially of partly felled trees
which are not supported. If a tree does not fall down
completely, remove the saw and help the process
along with a cable winch, a pulley or a towing vehicle.
Sawing a felled tree (log division)
The term „log division" describes the cutting up of a
felled tree into logs of the desired length.
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