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WORKING TECHNIQUES
The log is supported at one end. There is a high risk that it
will split.
Start by cutting from below (about 1/3 of the way through).
- Finish by cutting from above so that the two cuts meet.
The log is supported at both ends. There is a high risk that
the chain will jam.
- Start by cutting from above (about 1/3 of the way through).
- Finish by cutting from below so that the two cuts meet.
Limbing
When limbing thick branches you should use the same
approach as for cutting.
Cut difficult branches piece by piece.
Felling technique for tree tops
Safe distance
During tree maintenance work above ground level, the
working area must always be secured and marked out with
signs, tape or the like. The safe distance between the top of
the tree that is to be felled and the nearest workplace must be
at least 2 1/2 times the height of the tree. Make sure that no-
one else is in this risk zone before or during felling.
Felling direction
The aim is to fell the tree in a position where you can limb and
cross-cut the log as easily as possible. You want it to fall in a
location where you can stand and move about safely. The
main thing to avoid is that the falling tree top should get
jammed in another tree. Taking down a ”jammed” tree top is
very dangerous (see point 4 in this section).
Once you have decided which way you want the top of the
tree to fall you must assess which way the top of the tree
would fall naturally.
Several factors affect this:
• Lean of the tree
• Bend
• Wind direction
• Arrangement of branches
• Weight of snow
You may find you are forced to let the tree fall in its natural
direction because it is impossible or dangerous to try to make
it fall in the direction you first intended.
Another very important factor, which does not affect the felling
direction but does affect your safety, is to make sure the tree
has no damaged or dead branches that might break off and
hit you during felling.
!
WARNING! It takes a lot of experience to fell
a tree. Inexperienced users of chain saws
should not fell trees. Do not attempt any task
beyond your experience level!
!
WARNING! During critical felling operations,
hearing protectors should be lifted
immediately when sawing is completed so
that sounds and warning signals can be
heard.