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Sawing technique
Pull sawing (Fig. 20)
With this technique, sawing takes place with the un-
derside of the guide bar from top to bottom.
The saw chain pulls the device forwards and away
from the user. With this action, the front edge of the
device forms a support, which absorbs the forces that
arise on the tree trunk during sawing. With pull sawing,
the user has significantly greater control over the de
-
vice and is able to better avoid kickbacks. This sawing
technique should therefore be used if possible.
Push sawing (Fig. 21)
With this technology, sawing takes place with the top
side of the guide bar from bottom to top. The saw chain
pushes the device backwards, towards the user.
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WARNING!
If the guide bar tilts, the device may be jerked towards
the user with great force. If the user does not balance
the backward force of the saw chain with their body
strength, there is a risk that only the tip of the guide
bar will remain in contact with the wood and kickback
will occur.
Risk of death or serious injuries!
Felling a tree
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Risk of injury!
Felling and branch removal work may only be per
-
formed by trained personnel! There is a risk of life-
threatening injuries!
Fig. 22
Before starting felling work, make sure that:
•
no bystanders or animals are in the felling area (A).
• a clear evacuation route, free of obstacles, is avail-
able to all participants. Withdrawal (B) takes place at
an oblique angle to the felling direction.
• the area around the trunk is clear of obstacles (risk
of tripping!).
• the nearest workplace is at least 2½ trunk lengths
away. Before felling, check the felling direction of the
tree and make sure that no obstacles, persons or
animals are within a distance of 2½ tree lengths.
Fig. 23
Tree felling takes place in two steps:
• Saw a felling sink in the trunk of around one third of
its diameter, on the side of the felling direction (1).
• On the opposite side (2) make the felling cut, which
must be slightly higher than the felling sink (approx.
3–5 cm).
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Risk of injury!
Never saw fully through the trunk. The area (C) serves
as a “hinge” and ensures the correct felling direction.
During felling, only stand to the side of the tree you
intend to fell! There is a risk of life-threatening injuries!
Trunks lying flat on the ground (Fig. 24)
•
Cut around halfway through the trunk, then turn it
over and saw through the other side.
•
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Damage to the device!
Ensure that the guide bar does not come into contact
with the ground when sawing through a tree trunk!
Fallen trunks (Fig. 25)
We recommend supporting trunks on a sawhorse
when sawing through them. If this is not possible, the
trunk should be lifted with the aid of supporting boughs
or with support blocks and supported.
•
In area A first cut around one third of the trunk diam
-
eter from top to bottom, and then make the subse-
quent cut from bottom to top.
•
In area B first cut around one third of the trunk diam
-
eter from bottom to top, and then saw through from
the top.
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Risk of injury!
Do not saw trunks that are strained! Splitting wood or a
tilted guide bar can result in serious injuries!
Removing branches (Fig. 26)
•
Always work on the side opposite the respective
branch.
• Start at the bottom of the branch and work up.
•
Saw into the branch 10–15 cm from the branch base
from bottom to top, to 1/3 of the branch diameter (1).
•
Saw through the branch slightly further out from top
to bottom (2).
•
Perform a cut tightly against the trunk (3). Make the
cut from top to bottom.
•
During delimbing always saw off the branches that
project freely in the air first. Only lop off support
limbs once the branches have been sawn along their
length.
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Risk of injury!
With branches that are supported or strained, the saw
chain can wedge in the wood!
9. Cleaning and maintenance
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WARNING!
Always remove the battery from the device before all
work on the electrical tool. Danger of injury due to the
sharp cutting teeth! Wear safety gloves.
m
In the interest of your safety!
Only perform the maintenance work described here
yourself. All other work - in particular motor mainte
-
nance and repairs - must be performed by a qualified
specialist. Unprofessional work can lead to device
damage and therefore also to injuries.
Cleaning and maintenance overview
After every use
•
Clean the device.
Regularly, depending on the conditions of use
• Retighten the saw chain.
•
Clean guide bar oil guide groove.
• Sharpen the saw chain.
•
Check the saw chain oil level, top up if necessary.
