Stihl BT 131 Instruction Manual page 6

English
Do not operate your power tool in the starting
throttle position – engine speed cannot be con‐
trolled in this position.
To reduce the risk of injury, do not touch the drill‐
ing tool and drilling spindle unless the engine is
stopped and the drilling tool is at a standstill.
Avoid contact with lines carrying elec‐
trical current – Risk of electrical
shock!
Hold the machine firmly so that sudden jolts can
be absorbed – only apply a small amount of
pressure when drilling.
Take particular care when working in
stony areas or ground with roots.
Cover drilled holes and secure them.
To reduce the risk of injury, shut off the engine
and engage the drill brake before changing the
drill.
Do not touch machine parts, particularly the muf‐
fler – Risk of burn injuries.
Always shut off the engine before leaving the
unit unattended.
Check drilling tools at regular short intervals dur‐
ing operation or immediately if there is a noticea‐
ble change in operating behavior. Replace dam‐
aged or dull drilling tools and blades immedi‐
ately.
2.8 Vibrations
Prolonged use of the power tool may result in
vibration-induced circulation problems in the
hands (whitefinger disease).
No general recommendation can be given for the
length of usage because it depends on several
factors.
The period of usage is prolonged by:
– Hand protection (wearing warm gloves)
– Work breaks
The period of usage is shortened by:
– Any personal tendency to suffer from poor cir‐
culation (symptoms: frequently cold fingers,
tingling sensations).
– Low outside temperatures.
– The force with which the handles are held (a
tight grip restricts circulation).
Continual and regular users should monitor
closely the condition of their hands and fingers. If
6
2 Safety Precautions and Working Techniques
any of the above symptoms appear (e.g. tingling
sensation in fingers), seek medical advice.
2.9 Maintenance and Repairs
Service the machine regularly. Do not attempt
any maintenance or repair work not described in
the instruction manual. Have all other work per‐
formed by a servicing dealer.
STIHL recommends that you have servicing and
repair work carried out exclusively by an author‐
ized STIHL servicing dealer. STIHL dealers are
regularly given the opportunity to attend training
courses and are supplied with the necessary
technical information.
Only use high-quality replacement parts in order
to avoid the risk of accidents and damage to the
machine. If you have any questions in this
respect, consult a servicing dealer.
STIHL recommends the use of original STIHL
replacement parts. They are specifically
designed to match your model and meet your
performance requirements.
To reduce the risk of injury from unintentional
engine startup, always shut off the engine and
disconnect the spark plug boot before performing
any repairs, maintenance or cleaning work. –
Exception: Carburetor and idle speed adjust‐
ments.
Do not turn the engine over on the starter with
the spark plug boot or spark plug removed since
there is otherwise a risk of fire from uncontained
sparking.
To reduce the risk of fire, do not service or store
your machine near open flames.
Check the fuel filler cap for leaks at regular inter‐
vals.
Use only a spark plug of the type approved by
STIHL and make sure it is in good condition –
see "Specifications".
Inspect the ignition lead (insulation in good con‐
dition, secure connection).
Check the condition of the muffler.
To reduce the risk of fire and damage to hearing,
do not operate your machine if the muffler is
damaged or missing. –
Do not touch a hot muffler since burn injury will
result.
0458-529-8321-B