Be alert to potential movement of the
workpiece or anything else that could
cause the cut to close and pinch the
chain. In order to reduce the risk of
pinching, support the workpiece in such
a way that the cut remains open during
the cutting process and when the cut is
finished (see illustration.) Never make a
cut that results in a binding of the chain.
WARNING
Be particularly alert when cutting a
workpiece such as a pipe with a belled
end or a pipe in a trench that, if not
properly supported, can sag upon
completion of the cut, creating a pinch
not where you are actually cutting but,
rather, at or near the top of the
workpiece.
WARNING
Always use wet-cutting, since the water
can act as a lubricant in a pinch situation
and thus reduce the likelihood of
reactive forces occurring and the energy
of any such forces that do occur, making
it easier to maintain control of the
machine.
WARNING
To reduce the risk of injury from loss of
control from reactive forces:
GS 461
1.
Hold the concrete cutter machine
firmly with both hands.
2.
Maintain good balance and footing
at all times. Never cut while
standing on a ladder or other
insecure support.
3.
Position the concrete cutter in such
a way that your body is clear of the
cutting attachment. Avoid standing
in direct line with the chain (See
illustration.) Never bend over the
cutting attachment.
4.
Do not cut above shoulder height.
5.
Only STIHL branded parts and
cutting attachments expressly
approved by STIHL for use with the
specific STIHL concrete cutter
model are recommended. Although
certain other parts or attachments
may be useable with the STIHL
powerhead, their use may, in fact,
be extremely dangerous.
6.
Do not cut wood or any other
material for which the diamond
abrasive chain is not authorized.
7.
Begin cutting and continue at full
throttle.
8.
Do not overreach.
9.
Never sideload a chain in the kerf.
10. Use your concrete cutter for cutting
only. It is not designed for prying or
shoveling away any objects.
11. Be especially alert for reactive
forces, when cutting with the front
and upper quadrant of the chain.
12. Be alert to shifting of the workpiece
or anything that could cause the cut
to close and pinch the chain,
especially in the upper quadrant.
Support the workpiece in such a
way that the cut remains open.
Never make a cut that results in a
binding of the chain.
13. Always use wet-cutting. In a pinch
situation the water can act as a
lubricant and reduce the energy of
reactive forces.
14. Release any pressure on the
concrete cutter as you reach the
end of the cut. Too much pressure
may cause the operator to lose
control of the concrete cutter when
the diamond abrasive chain
completes the cut. The chain may
contact the operator or strike some
foreign object and break.
15. Use extreme caution when
reentering a cut and do not turn the
chain at an angle or push the chain
into the cut as this may result in a
binding of the chain.
MAINTENANCE, REPAIR AND
STORING
Maintenance, replacement, or repair of
the emission control devices and
systems may be performed by any
nonroad engine repair establishment or
individual. However, if you make a
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