Matrix 310.550.320 Originalbetriebsanleitung Seite 66

instructions.
• Never cut with the upper edge or the tip of the
cutter bar.
• Always hold the chainsaw firmly with both
hands.
Cutting wood which is under tension
Special care is required when cutting wood which
is under tension. Cutting wood which is under
tension can release the tension, causing the
wood to react out of control. In the worst case
this can result in severe and even fatal injuries.
This type of work must be performed only by
specially trained persons.
- Practice for guiding the device slight pressure,
but you do not overload the motor.
- Adhere to the cutting technique specified in
Section 7.2 in order to avoid injury and prevent
damage to your trees sustainably.
Clear the work area before cutting interfering
branches and undergrowth. Then you create
a retreat area, far from the spot where the cut
branches fall on, and remove any obstacles
there. Keep the work area clean, remove the cut
branches immediately. Pay attention to your
point, wind direction and the possible direction
of fall of the branches. Be prepared that fallen
branches can strike back. Place all other tools and
equipment at a safe distance from the branches
to be cut, but not in the retreat area.
Always observe the condition of the tree.
Look for rot and decay in the roots and branches.
If they are rotten inside, they can break off and
fall down unexpectedly during cutting. You could
also attend by fractured and dead branches out,
which is solved by the shake and fall on you. For
very thick or heavy branches you first make a
small incision below the branch before you work
from the top down to avoid chipping.
7.2 Basic cutting technique
Heavy branches break off easily when sawing.
They tear long strips of bark away from the
trunk, which damages the tree sustainably. The
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following section technique can significantly
reduce this risk:
1 Saw the first branch about 10 cm from the
trunk (see Figure A20).
2 Put in about 15 cm from the base of the top of a
further section. Saw until the branch breaks. The
risk of injury on the trunk is no longer (see Figure
A21).
3 Finally, remove with a clean cut from the top of
the trunk along the remaining (see Figure A 22).
Thus, the damage to the tree are kept as low
as possible, we recommend the interface
additionally to seal with grafting wax.
7.3 Hazards by reactive forces
Reactive forces occur during operation of the
saw chain. The forces which are applied to the
wood are against the operator. They occur when
the moving chain comes into contact with a
fixed object such as a branch or is pinched. These
forces can lead to a loss of control and injury.
Understanding the origin of these forces can help
you to avoid the scare and the loss of control. This
saw is designed to make the return effects are
not as noticeable as with traditional chainsaws.
Always still keep a firm grip and a good level to
maintain control of the tool in doubt.
The most common effects are:
• setback
• recoil,
• retreat.
Setback
The setback can occur when the moving saw
chain meets at the upper quarter of the guide rail
on a solid object or is pinched.