Reactive Forces - Stihl TSA 230 Gebrauchsanleitung

English
Use only high-quality spare parts. Otherwise,
there may be a risk of accidents and damage to
the cut-off machine. If you have any questions in
this respect, consult a servicing dealer.
STIHL recommends the use of genuine STIHL
spare parts. They are specifically designed to
match your cut-off machine and meet your per‐
formance requirements.
Do not modify the cut-off machine in any way –
this can be extremely dangerous –risk of acci‐
dents!
Check existing electrical contacts, power cords
and power plug of the charger regularly for
undamaged insulation and aging (brittleness).
Electrical components, e.g., the power cord of
the charger, may only be repaired and/or
replaced by qualified electricians.
3

Reactive Forces

The most frequently occurring reactive forces are
kickback and pull-in.
3.1 Kickback
Danger of kickback – Kickback can
result in fatal injuries.
Kickback occurs when the cut-off machine is
suddenly thrown up and back in an uncontrolled
arc towards the operator.
Kickback occurs if, for example, the abrasive cut‐
ting wheel
– gets jammed – especially the upper quarter, or
– is abruptly braked through friction contact with
a solid object
Reducing the risk of kickback
– Work cautiously and methodically
– Hold the cut-off machine firmly with both
hands and maintain a secure grip
40
– If possible, avoid using the upper quarter of
the abrasive cutting wheel for cutting. Use
extreme caution when guiding the abrasive
cutting wheel into a cut, do not twist or push
into the cut
– Avoid any wedge effect - the severed part
must not brake the abrasive cutting wheel
– Always be aware that the object to be cut may
move and other factors may cause the cut to
close and jam the abrasive cutting wheel.
– The object to be cut must be secured and sup‐
ported so that the kerf remains open during
and after cutting
– Objects to be cut must therefore be fully sup‐
ported and must be secured against rolling
away, slipping off or vibrations
– An exposed pipe must be provided with a sta‐
ble support that will bear its weight, using
wedges if necessary – always bear in mind a
proper support and the nature of the ground –
material may crumble away
3 Reactive Forces
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