Stihl GS 461 Instruction Manual page 7

2 Safety Precautions and Working Techniques
2.9.2 Pushback (B)
When the diamond abrasive chain on the top of
the guide bar – underbucking – is jammed or
encounters a solid object, the concrete cutter
may suddenly be pushed straight back toward
the operator
– Do not allow the guide bar to become jammed
– Always be aware that the object to be cut may
move and other factors may cause the cut to
close and jam the diamond abrasive chain
– The object to be cut must be secured and sup‐
ported so that the cut remains open during
and after cutting
– Do not twist the guide bar in the cut
2.10 Working – cutting off
Ensure sufficient water supply to diamond abra‐
sive chain – do not allow diamond abrasive chain
to run dry.
Always make wet cuts – regardless of the mate‐
rial to be cut.
The diamond abrasive chain must be guided
straight in the cut, without wedging. Never exert
lateral pressure on the diamond abrasive chain.
Do not use for lateral grinding or scrubbing.
Do not operate your saw with the starting throttle
lock engaged. Engine speed cannot be control‐
led with the throttle trigger in this position.
Examine the workplace. Avoid all danger due to
damaged piping or electrical wiring.
0458-761-8221-B
The machine must not be used near inflammable
substances or gases.
B
Do not cut into pipes, metal tanks or other con‐
tainers if you are not sure that they do not con‐
tain any volatile or inflammable substances.
Never leave the machine unattended with the
engine running. Stop the engine before leaving
the machine unattended (e. g. for breaks).
Work calmly and carefully – in daylight conditions
and only when visibility is good. Ensure you do
not endanger others – stay alert at all times.
Make certain that all parts of your body are well
clear of the extended range of travel of the dia‐
mond abrasive chain.
The diamond abrasive chain must be running
when you pull the concrete cutter out of the
object being cut.
Only use the concrete cutter for cutting – not for
prying off or shoveling away objects.
Always decide the cutting direction before posi‐
tioning the concrete cutter. After that, do not
change the cutting direction. Never push or hit
with the device into the cutting gap – do not let
the concrete cutter fall into the cutting depth –
risk of breakage!
If cutting performance begins to deteriorate,
check the sharpness of the diamond abrasive
chain, resharpen as needed. To do this, briefly
cut through abrasive material, e. g., sandstone,
aerated concrete or asphalt.
When working at heights:
– Always use a lift bucket
– Never use the machine while standing on a
ladder
– Never work on an insecure support
– Never work above shoulder height
– Never use the machine with just one hand
Begin cutting with the concrete cutter at full throt‐
tle.
English
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