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WORKING TECHNIQUES
English – 25
4 Is there a risk of kickback?
5 Do the conditions and surrounding terrain affect how
safely y
ou can stand and move about?
Two factors decide whether the chain will jam or the object
that you are cutting will split: the first is how the object is
supported before and after cutting, and the second is
whether it is in tension.
In most cases you can avoid these problems by cutting in
tw
o stages;
from the top and from the bottom. You need to
support the object so that it will not trap the chain or split
during cutting.
The following instructions describe how to handle the
common situations you are lik
ely to encounter when using
a chain saw.
Limbing
When limbing thick branches you should use the same
approach as for cutting.
Cut difficult branches piece by piece.
Cutting
If you have a pile of logs, each log you attempt to cut
should be removed from the pile, placed on a saw horse
or runners and cut individually.
Remove the cut pieces from the cutting area. By leaving
them in the cutting area, you increase the r
isk for
inadvertently getting a kickback, as well as increasing the
risk of losing your balance while working.
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 g
round as y
ou 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 w
ay 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).
IMPORTANT! If the chain jams in the cut: stop the
engine! Don’t try to pull the chain saw free. If you do you
may be injured by the chain when the chain saw
suddenly breaks free. Use a lever to open up the cut and
free the chain saw.
!
WARNING! Never attempt to cut logs
while they are in a pile or when a couple
of logs are lying together. Such
procedures drastically increase the risk
of kickback which can result in a serious
or fatal injury.
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