Operator - Stihl MSA 120 C Instruction Manual

English
– Select a more powerful battery; or
– Consult a reputable tree removal professional.
￭ Read and follow the operating and use instructions in this
manual for approved applications and recommended
working techniques.
￭ The saw chain has many sharp cutters. If they contact
your flesh, they will cut you even if the chain is not moving.
– Always wear heavy-duty work gloves when handling
the saw or its chain.
– Keep hands, feet and other parts of your body away
from the chain.
￭ Reactive forces, including kickback, can be dangerous.
– Pay special attention to the sections of this
instruction manual dealing with reactive forces.
￭ Observe all applicable federal, state and local safety
regulations, standards and ordinances.
￭ Improper use could result in personal injury or property
damage, including damage to the chain saw.
– Use the chain saw, battery and charger only as
described in this manual.
– Never attempt to modify or override the chain saw's
controls or safety devices in any way.
– Never use a chain saw that has been modified or
altered from its original design.
￭ The STIHL AK series battery is designed for use only with
compatible STIHL power tools.
￭ The STIHL AL 101, AL 300 or AL 500 series charger is
designed for charging STIHL AK and AP series batteries
only.
6
5 IMPORTANT SAFETY INSTRUCTIONS
5.2

Operator

WARNING
￭ Working with the chain saw can be strenuous. The
operator must be in good physical condition and mental
health. To reduce the risk of personal injury from fatigue
and loss of control:
– Check with your doctor before using the chain saw if
you have any health condition that may be
aggravated by strenuous work.
– Do not operate the chain saw while under the
influence of any substance (drug, alcohol or
medication, etc.) that might impair vision, balance,
dexterity or judgment.
– Be alert. Do not operate the chain saw when you are
tired. Take a break if you become tired.
– Do not permit minors to use the chain saw.
– Bystanders, especially children, and animals should
not be allowed in the area where the chain saw is in
use.
￭ Prolonged use of a chain saw (or other power tools)
exposing the operator to vibration may produce white
finger disease (Raynaud's phenomenon) or carpal tunnel
syndrome. These conditions reduce the hand's ability to
feel and regulate temperature. They produce numbness
and burning sensations and may also cause nerve and
circulation damage as well as tissue necrosis.
￭ All factors which contribute to white finger disease are not
known. Cold weather, smoking and diseases or physical
conditions that affect blood vessels and blood transport,
as well as high vibration levels and long periods of
exposure to vibration, are mentioned as factors in the
development of white finger disease.
￭ To reduce the risk of white finger disease and carpal
tunnel syndrome:
– Wear gloves while working and keep your hands
warm.
– Keep the chain saw well maintained. An improperly
maintained chain saw or one with loose components
will tend to have higher vibration levels.
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