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• If the timber is under tension (15), first cut the pressure side (A). Then the crosscut
can be performed on the tension side (B). Thus clamping of the guide bar can be
avoided.
Technique for tree topping
CAUTION:
• People topping trees or cutting of branches must be specially trained. High
risk of injuries!
• When cutting of branches, the chain saw should be supported on the trunk. Do not
use the end of the bar for cutting (risk of kickback).
• Be aware of branches under tension. Do not cut free branches from below.
• Never perform detensioning cuts while standing on the trunk.
• Before topping tree
a) only those people are within the working area which are actually involved in topping
the tree.
b) every worker involved can withdraw without stumbling (the people should withdraw
backwards in a diagonal line, i. e. at a degree of 45°).
c) the bottom part of the trunk is free from foreign objects, underbrush and branches.
Make sure to have a safe footing (risk of stumbling).
d) the next working place is at least 2 1/2 tree lengths away (16). Before cutting down
the tree check the direction of fall and make sure that there are neither people
nor objects within a distance of 2 1/2 tree lengths.
• Judging the tree:
Direction of hanging – loose or dry branches – height of the tree – natural
overhang – is the tree rotten?
• Take into account the direction and speed of the wind. If strong gusts are occurring, do
not do any felling. Avoid sawdust (pay attention to the direction the wind is blowing)!
• Notching the trunk (17, A):
The notch determines the direction of fall and guides the tree. The trunk is notched
perpendicular to the direction of fall and penetrates 1/3 – 1/5 of the trunk diameter.
Perform the cut near the ground.
• When correcting the cut, always do so over the whole width of the notch.
• Cut down the tree (18, B) above the bottom edge of the notch (D). The cut must
be exactly horizontal. The distance between both cuts must be approx. 1/10 of the
trunk diameter.
• The material between both cuts (C) serves as a hinge. Never cut it through,
otherwise the tree will fall without any control. Insert felling wedges in time.
• Secure the cut only with wedges made of plastic or aluminium. Do not use iron
wedges. If the saw hits an iron wedge the chain can be seriously damaged or torn.
• When cutting down a tree always stay sidewards of the falling tree.
• When withdrawing after having performed the cut, be alert for falling branches.
• When working on sloping ground the user of the chain saw must stay above or
sidewards of the trunk to be cut or the tree already cut down.
• Be alert for trunks which may roll towards you.
Transport and storage
• When changing your location during work switch off the chain saw and actuate the
chain brake in order to prevent an inadvertent start of the chain.
• Never carry or transport the chain saw with the chain running.
• When transporting the chain saw over long distances the guide bar protection cover
(delivered with the chain saw) must be applied.
• Carry the chain saw with the tubular handle. The guide bar points backwards (19).
Avoid coming in contact with the muffler (danger of burns).
• Ensure safe positioning of the chain saw during car transportation to avoid fuel or
chain oil leakage.
• Store the chain saw safely in a dry place. It must not be stored outdoors. Keep the
chain saw away from children.
• Before storing the chain saw over a long period of time or shipping it the fuel and
oil tanks must be completely emptied.
• Perform cleaning and maintenance before storage.
15
16
17
18
19
6
B
A
B
45
o
2
/
1
2
45
o
= cutting down area
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