Stihl MSA 161 T Notice D'emploi page 33

4 Safety Precautions
brake and remove the battery. Before clear‐
ing the jam.
■ The moving saw chain warms up and
expands. If the saw chain is not sufficiently
lubricated and retensioned, the saw chain may
jump off the guide bar or it may break. This
may result in serious injury to people and
damage to property.
► Use saw chain lubricant.
► Check the saw chain tension regularly while
working. If saw chain tension is insufficient:
Tension the saw chain.
■ If the chain saw starts behaving differently or
in an unusual way while operating, the chain
saw may be in an unsafe condition. This may
result in serious injury to people and damage
to property.
► Stop working, remove the battery and con‐
sult a STIHL dealer.
■ The chain saw may cause vibrations in opera‐
tion.
► Wear gloves.
► Take breaks.
► If signs of a circulatory disturbance occur:
Consult a doctor.
■ If the moving saw chain hits a hard object,
sparks may occur. Sparks can cause fires in a
flammable environment. Persons may be seri‐
ously or fatally injured and property may be
damaged.
► Do not use the chain saw in a flammable
environment.
■ The saw chain runs on for a short period after
you release the trigger. People may be cut by
the moving saw chain. They may cause seri‐
ous injury to persons.
► Wait for the saw chain to stop moving.
WARNING
2
1
If you saw wood which is under tension, the
■
guide bar may become jammed. The user may
lose control of the chain saw and be seriously
injured.
► Make a relieving cut (1) in the compression
side (A) first, then perform a bucking (2) cut
0458-791-9621-D
B
A
at the tension side (B) from above, directly
above the first cut.
DANGER
■ Working near live electric cables may result in
accidental contact with the saw chain and
damage the cables. This may result in serious
or fatal injury to the user.
► Do not operate in the vicinity of live wires.
4.7.2 Felling
WARNING
■ Inexperienced users cannot assess the dan‐
gers of felling a tree. This can result in serious
or fatal injuries and damage to property.
► If you have any queries: Do not fell the tree
yourself.
■ Parts of the tree being removed and branches
can fall on bystanders or objects during the
felling operation. This can result in serious or
fatal injuries and damage to property.
► Determine direction of fall so that the area
in which the part of the tree being removed
falls is clear.
► Do not allow bystanders, children or ani‐
mals within 2.5 tree lengths of the work
area.
4.8 Reactive Forces
4.8.1 Kickback
Kickback can be caused for the following rea‐
sons:
– The rotating saw chain in the upper quadrant
of the bar nose makes contact with a hard
object and is suddenly braked.
– The rotating saw chain is pinched at the bar
nose.
The chain brake cannot prevent kickback.
English
33