Jonsered CS 2139T Chainsaw User Manual


 
English – 23
WORKING TECHNIQUES
Cutting
The log is lying on the ground. There is little risk of the chain
jamming or the object splitting. However there is a risk that the
chain will touch the ground when you finish the cut.
Cut all the way through the log from above. Avoid letting the
chain touch the ground as you finish the cut. Maintain full
throttle but be prepared for what might happen.
- If it is possible (can you turn the log?) stop cutting about 2/
3 of the way through the log.
- Turn the log and finish the cut from the opposite side.
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).
!
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
that you feel unsure of!