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top side, then cut through the remaining 2/3 from the
bottom side level with the top cut.
Delimbing trees
This is the process of cutting branches from a felled
tree. In the case of large, downward-growing
branches that support the tree, cut up the tree trunk
before delimbing. Cut off smaller branches with a
single cut as shown in the illustration. Branches that
are under tension should be cut from below to avoid
jamming the saw.
Felling a tree
If two or more people are cutting and felling at the
same time, the distance between the felling and
cutting people should be at least twice the height of
the tree being felled. When felling trees, it must be
ensured that other people are not exposed to
danger, that no utility lines are hit and that no
property damage is caused. If a tree comes into
contact with a utility line, the utility company must be
immediately informed.
When sawing on a hillside, the operator of the
chainsaw should stay in the area above the tree
being felled, as the tree will probably roll or slide
downhill after felling.
Before felling, an escape route should be planned
and if necessary cleared. The escape route should
lead diagonally back from the expected fall line, see
illustration.
A = Felling direction
B = Danger zone
C = Escape area
C
B
C
Before felling, the natural inclination of the tree, the
position of large branches and the wind direction
must be taken into account when defining the felling
direction of the tree.
Dirt, stones, loose bark, nails, clamps and wire must
be removed from the tree.
Cutting a notch:
Cut a notch (A) at right angles to the felling direction
to a depth of 1/3 of the tree diameter, as shown in
the illustration.
18
1.) 1/3
2.) 2/3
B
A
B
C
A
B
First cut the bottom, horizontal notch cut. This
prevents the sawing chain or guide rail sticking
when making the second notch cut.
Cutting a felling cut:
Start the felling cut (B) at least 50 mm above the
horizontal notch cut, see illustration. Execute the
felling cut parallel to the horizontal notch cut. Make
the felling cut deep enough so that a breaking bar
(C) remains in position and can act as a hinge. The
bar prevents the tree from turning and falling in the
wrong direction. Do not saw through the bar. Width
of the bar (C): 50 mm.
When the felling cut approaches the bar, the tree
should start to fall. If it becomes apparent that the
tree will possibly not fall in the desired direction, or
inclines back and the sawing chain jams, interrupt
the felling cut and use wedges made of wood,
plastic or aluminium to open the cut and return the
tree back to the desired felling line.
When the tree starts falling, remove the chainsaw
from the cut, switch it off, set it down and leave the
danger zone via the planned escape route. Watch
out for falling branches and take care not to
stumble.
Retensioning the sawing chain
When working with the chainsaw, the sawing chain
expands as a result of heat. It then starts to sag and
can jump out of the guide rail groove.
Check the chain tension (as specified in chapter
6.1) and retighten the sawing chain if necessary.
If the sawing chain is retensioned when it is hot, at
the end or work it must be slackened because
otherwise cooling could result in high contraction
tension.
Insufficient chain lubrication
If the oil reservoir is still almost full after chainsaw
operation of around 20 minutes, it may be that the oil
channel (24) of the machine, or the oil inlet bore (28)
of the guide rail, is obstructed and has to be
cleaned.
Transporting the machine (after use)
- Remove the battery packs .
- Keep hands away from the safety switch (12).
- Mount the protective covers (1) supplied on the
guide rail.
8. Storage
Slide the protective cover (1) onto the guide rail (2).
Remove the battery packs . Clean machine. Store in
a secure place out of the reach of children.
9. Maintenance and Cleaning
WARNING! Remove the battery packs (11) .
Unintentional startup can cause serious
injuries. The motor must be stationary.
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