7
BR 420
English
Using the vacuum attachment*
Warning!
To reduce the risk of
personal injury from fire,
never attempt to pick up
hot or burning substances
(e.g. smoldering ashes,
glowing cigarettes).
To reduce the risk of fatal
injury from fire or
explosion, never attempt
to pick up combustible
fluids (e.g. gasoline) or
any materials soaked in
combustible fluids.
*
see “Guide to Using this Manual”
Vibrations
Prolonged use of the unit 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)
–
breaks
The period of usage is shortened by:
–
Any personal tendency to suffer
from poor circulation (symptoms:
frequently cold fingers, itching).
–
Low outside temperatures.
–
Gripping force (a tight grip hinders
circulation).
Continual and regular users should
monitor closely the condition of their
hands and fingers. If any of the above
symptoms appear, seek medical advice.
Maintenance and repairs
The machine must be serviced regularly.
Do not attempt any maintenance or
repair work not described in your
Owner’s Manual. All other work should
be carried out by a servicing dealer.
STIHL recommends that maintenance
and repair work be carried out only by
authorized STIHL dealers. STIHL
dealers receive regular training and are
supplied with technical information.
Use only high-quality replacement parts,
in order to avoid the risk of accidents or
damage to the machine. Contact a
dealer if in doubt.
STIHL recommends the use of genuine
STIHL spare parts. Such parts have
been optimized for the machine and the
user's requirements.
Before starting any maintenance or
repair work and before cleaning the
machine, always
stop the engine and
disconnect the spark plug boot
to
avoid all
risk of injury
if the engine
starts up inadvertently. – Exception:
adjustment of carburetor and idle speed.
