CUTTERS EDGE
770
/970/12
7
0 Model
Operating
Climbing kickback
If the kickback zone is used for cutting the reactive force
drives the blade to climb up in the cut. Do not use the
Kickback
Kickback is the sudden upward motion that can occur if the
blade is pinched or stalled in the kickback zone. Most
kickbacks are small and pose little danger. However a
kickback can also be very violent and throw the power cutter
up and back towards the user in a rotating motion causing
serious or even fatal injury.
Reactive force
A reactive force is always present when cutting. T he force
pulls the machine in the opposite direction to the blade
rotation. Most of the time this force is insignificant. If the blade
is pinched or stalled th e reactive forc e will be strong and you
might not be able to control the power cutter.
Never move the machine when the cutting equipment is
rotating. Gyroscopic forces can obstruct the intended
movement.
Kickback zone
Never use the kickback zone of the blade
for cutting
. If the
blade is pinched or stalled in the kickback zone, the reactive
force will push the power cutter up and back towards the user
in a rotating motion causing serious or even fatal injury.
kickback zone. Use the lower quadrant of the blade to avoid
climbing kickback.
Pinching kickback
Pinching is when the cut closes and pinches the blade. If the
blade is pinched or stalled the reactive force will be strong and
you might not be able to control the power cutter.
If the blade is pinched or stalled in the kickback zone, the
reactive force will push the power cutter up and back towards
the user in a rotating motion causing serious or even fatal
injury. Be alert for potential movement of the work piece. If the
work piece is not properly supported and shifts as you cut, it
might pinch the blade and cause a kick back.
Pipe cutting
Special care should be taken when cutting in pipes. If the pipe
is not properly supported and the cut kept open through out
the cutting, the blade might be pinched in the kickback zone
and cause a severe kickback. Be especially alert when cutting
a pipe with a belled end or a pipe in a trench that, if not
properly supported, may sag and pinch the blade.
Before starting the cut the pipe must be secure so it does not
move or roll during cutting.
If the pipe is allowed to sag and close the cut, the blade will be
pinched in the kick back zone and a severe kick back might
develop. If the pipe is properly supported the
!
WARNING! Kickbacks are sudden and can be
very violent. The power cutter can be thrown
up and back towards the user in a rotating
motion causing serious or even fatal injury. It
is vital to understand what causes kickback
and how to avoid it before using the machine.
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