MS 461 R
English
14
WARNING
Never modify your muffler. Any
modification could cause an increase in
heat radiation, sparks or sound level,
thereby increasing the risk of fire, burn
injury or hearing loss. You may also
permanently damage the engine. Have
your muffler serviced and repaired by
your STIHL servicing dealer only.
WARNING
The muffler and other parts of the engine
(e.g. fins of the cylinder, spark plug)
become hot during operation and remain
hot for a while after stopping the engine.
To reduce risk of burns, do not touch the
muffler and other parts while they are
hot. Keep the area around the muffler
clean. Remove excess lubricant and all
debris such as pine needles, branches
or leaves. Let the engine cool down
sitting on concrete, metal, bare ground
or solid wood (e.g. the trunk of a felled
tree) away from any combustible
substances.
WARNING
An improperly mounted or damaged
cylinder housing or a
damaged/deformed muffler shell may
interfere with the cooling process of the
muffler. To reduce the risk of fire or burn
injury, do not continue work with a
damaged or improperly mounted
cylinder housing or a
damaged/deformed muffler shell.
Your muffler is furnished with a spark
arresting screen designed to reduce the
risk of fire from the emission of hot
particles. Never operate your unit with a
missing or damaged spark arresting
screen. If your gas/oil mix ratio is correct
(i.e., not too rich), this screen will
normally stay clean as a result of the
heat from the muffler and need no
service or maintenance. If you
experience loss of performance and you
suspect a clogged screen, have your
muffler maintained by a STIHL servicing
dealer. Some state or federal laws or
regulations may require a properly
maintained spark arrester for certain
uses. See the "Maintenance, Repair and
Storing" section of these Safety
Precautions. Remember that the risk of
a brush or forest fire is greater in hot or
dry conditions.
WARNING
DANGER
Roof-Venting
Fire and rescue departments in North
America frequently engage in the
practice of "roof-venting" structures
involved in fires to help evacuate
penned-up heat and smoke by sawing
vent openings into the top layer of a
building.
Roof-venting usually means physically
placing one or more fire fighters on or
near the roof of a structure, that may still
be burning and forcing openings either
manually or with a chain saw. There are
several ways to make such an opening,
but many, if not most, run counter to
standard safe and sound operating
principles for handheld power
equipment, primarily due to insecure
footing.
Some STIHL chain saws
are equipped with a cata
-
lytic converter, which is
designed to reduce the
exhaust emissions of the
engine by a chemical
process in the muffler.
Due to this process, the
muffler does not cool
down as rapidly as con
-
ventional mufflers when
the engine returns to idle
or is shut off. To reduce
the risk of fire and burn
injuries when using a cat
-
alytic converter, always
set your chain saw down
in the upright position and
never locate it where the
muffler is near dry brush,
grass, wood chips or
other combustible materi
-
als while it is still hot.
Do not rely on the chain
saw ’s insulation against
electric shock. To reduce
the risk of electrocution,
never operate this chain
saw in the vicinity of any
wires or cables (power,
etc.) which may be carry
-
ing electric current. To
reduce risk of electrocu
-
tion, take extra
precautions when cutting
near power lines. Have
the power switched off
before starting cutting
work in the immediate
vicinity of power lines.
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General
Weight and Dimensions
