5.14. Precautionary measures against
kickback
CAUTION! KICKBACK!
Be aware of the danger of kickback when working with the
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tool. There is a risk of personal injury. You can avoid kick-
backs by being careful and using the correct sawing tech-
nique.
Contact with the tip of the rail can in some cases lead to an
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unexpected backward reaction resulting in the guide rail
flying upwards towards the operator (see Fig. A).
Fig. A
Kickbacks can occur if the tip of the guide rail touches an
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object or if the wood bends and the saw chain gets caught
in the cut (see Fig. B).
Fig. B
If the saw chain jams in the upper edge of the guide rail,
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the rail can kick back violently towards the operator.
Any such reaction can lead to you losing control over the
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saw and possibly injuring yourself. Do not rely solely on the
chainsaw's built-in safety devices. As the user of a chain-
saw, you can take a number of measures to avoid accidents
and injury.
A kickback is caused by incorrect use or misuse. It can be
avoided by taking proper precautions as given below:
Hold the saw firmly with both hands, with your thumb and
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fingers around the handles of the chainsaw. Position your
body and arms so you can withstand kickback forces. If
suitable measures are taken, the operator can control the
kickback forces. Never let go of the chainsaw.
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Avoid any abnormal posture and do not saw over shoulder
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height. This will prevent inadvertent contact with the tip of
the rail and allows a better control of the chainsaw in unex-
pected situations.
Always use the replacement rails and saw chains specified
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by the manufacturer. Incorrect replacement rails and saw
chains can lead to a breakage of the saw chain and/or
kickback.
Follow the manufacturer's instructions for sharpening and
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maintaining the saw chain. Setting the depth stop too low
can increase the risk of kickback.
Do not saw with the tip of the blade. It can cause kickbacks.
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Ensure that there are no objects on the ground that you can
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trip over.
5.15. Grass trimmer, brush cutter and brush
saw safety warnings
a)
Do not use the machine in bad weather conditions,
especially when there is a risk of lightning. This de-
creases the risk of being struck by lightning.
b)
Thoroughly inspect the area for wildlife where the
machine is to be used. Wildlife may be injured by the
machine during operation.
c)
Thoroughly inspect the area where the machine is
to be used and remove all stones, sticks, wires,
bones, and other foreign objects. Thrown objects can
cause personal injury.
d) Before using the machine, always visually inspect
to see that the cutter or blade and the cutter or
blade assembly are not damaged. Damaged parts in-
crease the risk of injury.
e) Follow instructions for changing accessories. Improp-
erly tightened blade securing nuts or bolts may either dam-
age the blade or result in it becoming detached.
f) The rated rotational speed of the blade must be at
least equal to the maximum rotational speed
marked on the machine. Blades running faster than their
rated rotational speed can break and fly apart.
g) Wear eye, ear, head and hand protection. Adequate
protective equipment will reduce personal injury by flying
debris or accidental contact with the cutting line or blade.