Chain Saw Safety Warnings; Causes And Operator Prevention Of Kickback; Service - Stihl MSA 120 C Instruction Manual

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e) Do not use a battery pack or tool that is damaged or
modified. Damaged or modified batteries may exhibit
unpredictable behaviour resulting in fire, explosion or risk
of injury.
f) Do not expose a battery pack or tool to fire or excessive
temperature. Exposure to fire or temperature above
130 °C (265 °F) may cause explosion.
g) Follow all charging instructions and do not charge the
battery pack or tool outside the temperature range
specified in the instructions. Charging improperly or at
temperatures outside the specified range may damage the
battery and increase the risk of fire.

25.7 Service

a) Have your power tool serviced by a qualified repair person
using only identical replacement parts. This will ensure
that the safety of the power tool is maintained.
b) Never service damaged batteries. Service of battery
packs should only be performed by the manufacturer or
authorized service providers.

25.8 Chain saw safety warnings

– Keep all parts of the body away from the saw chain when
the chain saw is operating, make sure the saw chain is not
contacting anything. A moment of inattention while
operating chain saws may cause entanglement of your
clothing or body with the chain saw.
– Always hold the chain saw with your right hand on the rear
handle and your left hand on the front handle. Holding the
chain saw the other way round increases the risk of injury
and may not be used.
– Hold your electric power tool only by the insulated grip
surfaces because the saw chain may contact hidden
electrical wires. Saw chains which touch a live wire make
metallic parts of an electric power tool live and could give
the user an electric shock.
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25 General Power Tool Safety Warnings
– Wear safety glasses and hearing protection. Further
protective equipment for head, hands, legs and feet is
recommended. Suitable protective clothing helps reduce
the risk of injury from thrown wood chips and accidental
contact with the saw chain.
– Do not operate a chain saw in a tree. There is an
increased risk of injury when working in a tree.
– Always keep proper footing and operate the chain saw
only when standing on a fixed, secure and level surface.
A slippery surface or instable support such as a ladder
could cause the operator to lose control of the chain saw.
– When cutting a limb that is under tension be alert for
spring back. When the tension in the wood fibres is
released the spring loaded limb may strike the operator
and/or throw the chain saw out of control.
– Use extreme caution when cutting brush and saplings.
The slender material may catch the saw chain and be
whipped toward you or pull you off balance.
– Carry the chain saw by the front handle with the chain saw
switched off and away from your body. When transporting
or storing the chain saw always fit the guide bar scabbard.
Proper handling of the chain saw will reduce the likelihood
of accidental contact with the moving saw chain.
– Follow instructions for lubricating, chain tensioning and
changing accessories. Improperly tensioned or lubricated
chain may either break or increase the chance for
kickback.
– Keep handles dry, clean and free from oil and grease.
Greasy, oily handles are slippery causing loss of control.
– Cut wood only. Do not use chain saw for purposes not
intended. Example: do not use chain saw for cutting
plastic, masonry or non-wood building materials. Use of
the chain saw for operations different than intended could
result in a hazardous situation.

25.9 Causes and operator prevention of kickback:

Kickback may occur when the nose or tip of the guide bar
touches an object, or when the wood closes in and pinches
the saw chain in the cut.
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