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• When cutting a branch that is under tension, expect it to
spring back. If the tension in the wood fibres is released,
the tensioned branch can hit the operator and/or wrest the
chainsaw from control.
• Be especially careful when cutting undergrowth and young
trees. The thin material can get caught in the saw chain and
hit you or throw you off balance.
6.7 Vibrations
m WARNING
Raynaud's syndrome is a vascular disease that causes the small
blood vessels on the fingers and toes to cramp in spasms. The
symptoms include: Numbness, loss of sensitivity, tingling, itch-
ing, pain, decrease in strength, change of colour or condition
of the skin. The affected areas are no longer supplied with suf-
ficient blood and therefore appear extremely pale. The frequent
use of vibrating tools can cause nerve damage in people whose
circulation is impaired (e.g. smokers, diabetics). If you notice
unusual adverse effects, stop working immediately and seek
medical advice. For long-term and regular users, it is therefore
recommended that you keep a close eye on the condition of
your hands and fingers. Observe the following information to
reduce hazards:
• Keep your body warm, especially your hands, especially in
cool weather.
• Take regular breaks and move your hands to promote circula-
tion.
• Limit the use of high-vibration tools per day and spread them
out over several days. Make a work plan that limits the vibra-
tion load.
• Ensure that the device vibrates as little as possible through
regular maintenance and fixed parts on the device. Replace
worn components immediately.
• Change your working position regularly.
• If the machine is to be used or operated frequently, you
should contact your specialist dealer and request anti-vibra-
tion accessories (handles) if applicable.
6.8 Safety functions of the chainsaw (Fig. 1)
• The front hand guard (1) protects the left hand of the operat-
ing person should it slip off the front handle while the chain-
saw is running.
• The rear hand guard (12) protects the right hand from contact
with a discarded or broken saw chain.
• The chain brake is a safety function for minimising injuries from
kick-backs by stopping a running saw chain in milliseconds. It
is activated by the front hand guard in the event of a kick-back.
• The throttle interlock (9) prevents the engine from randomly
accelerating. The throttle lever can only be pressed when the
throttle interlock is pressed.
• The claw stop (15) supports the chainsaw on the wood while
working. Never work without a claw stop, the chainsaw can
pull the operator forward. Use the claw stop for cutting tree
trunks or thick branches. Using the claw stop increases work
safety, reduces personal strain when working and vibrations
are also reduced. The claw stop must always be positioned
on the tree trunk when using the chainsaw. Push the claw
stop onto the tree trunk using the rear handle. To cut, push
the front handle in the direction of the cutting line. The claw
stop may need to be repositioned for further cutting.
8
GB/IE/NI/CY/MT
6.9 Precautionary measures against kick-back
m WARNING
Watch out for kick-back when working with the device. There is
a danger of injury. Avoid kick-backs through caution and cor-
rect sawing technique.
• Touching with the rail tip can sometimes lead to an unex-
pected backward reaction, whereby the guide rail whips up
and in the direction of the operator (Fig. O).
• Kick-back can arise if the tip of the guide rail touches an ob-
ject or if the wood bends and the saw chain jams in the cut.
• Before the saw chain is guided into the cutting area, it can
slip away to the side or jump up.
• (Attention! Increased risk of kickback!)
• If the saw chain jams on the top edge of the guide rail, the
chainsaw can jerk back suddenly in the direction of the op-
erator (fig. J).
• If the saw chain jams on the lower edge of the guide rail, the
chainsaw can jerk forward suddenly away from the operator
(fig. K).
• Be extremely careful when using the chain of the chainsaw
to continue cutting into a cut that has already been started.
• Do not saw branches or pieces of wood that could change
their position during the sawing process or where the cut
closes during the sawing process.
• Each of these reactions can lead to you losing control of the
saw and possibly suffering a serious injury. Never rely solely
on the safety equipment integrated in the chainsaw. As a
chainsaw user, take various measures to work without ac-
cidents and injuries.
Kick-back is the result of incorrect or deficient use. It can be
prevented by suitable precautionary measures, as described
in the following:
• Hold the saw firmly with both hands, with the thumbs and
fingers enclosing the chainsaw handles. Bring your body and
arms into a position in which you can absorb the kick-back
forces. If suitable measures are implemented, the operator
will be able to withstand the kick-back forces. Never let go of
the chainsaw (see fig. E).
• Avoid an unusual body stance and never saw above shoulder
height. This will help to avoid unintentional contact with the
rail tip, and enable improved control of the chainsaw in unex-
pected situations.
• Always use replacement guide rails and saw chains pre-
scribed by the manufacturer. Incorrect replacement guide
rails and saw chains may cause the saw chain to break and/
or lead to kick-back.
• Adhere to the instructions of the manufacturer when sharp-
ening and maintaining the saw chain. If the depth limiter is
too low, this increases the tendency towards kick-back.
• Do not saw with the tip of the guide rail. There is a risk of
kick-back.
• Make sure that there are no nails or metal pieces in the cutting
area. Pay special attention to nails or pieces of iron around
the cutting area. Also be careful when sawing hardwoods
where the chain can get caught. This can cause kick-back.
• Start cutting at full power and always keep the chainsaw at
maximum speed while sawing.
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