Stihl MS 661 C-M Instruction Manual

0458-759-8221-C
17
English 5 IMPORTANT SAFETY INSTRUCTIONS
inhalation of dust or other airborne contaminants,
especially those with a smaller particle size, may cause
respiratory or other illnesses. This includes wood dust,
especially from hardwoods, but also from some softwoods
such as Western Red Cedar.
– Control dust (such as saw dust) and mists (such as
oil mist from chain lubrication) at the source where
possible.
– Always work with a properly sharpened chain, which
produces wood chips rather than fine dust.
– To the extent possible, operate the chain saw so that
the wind or operating process directs any dust, mist
or other particulate matter raised by the chain saw
away from the operator.
– When respirable dust or other particulate matter
cannot be kept at or near background levels, always
wear a respirator that is approved by PHAC and
rated for worksite-specific conditions. Follow the
recommendations of governmental authorities (e.g.,
CCOHS/PHAC) and occupational and trade
associations.
￭ If the vegetation being cut or the surrounding ground is
coated with a chemical substance, such as pesticide or
herbicide:
– Read and follow the instructions and warnings that
accompanied the substance coating the vegetation
or surrounding ground.
￭ Breathing asbestos dust is dangerous and can cause
severe or fatal injury, respiratory illness or cancer,
including mesothelioma. The use and disposal of
asbestos-containing products is strictly regulated by
CCOHS and the ECCC.
– Do not use your chain saw to cut or disturb asbestos
or asbestos-containing products.
– Stop work immediately and contact the relevant
state and local authorities and/or ECCC, your
employer or local CCOHS representative if you have
reason to believe that you might be disturbing
asbestos.
￭ Repeated contact with waste oil can cause skin cancer
and its use is harmful to the environment.
– Do not use waste oil to lubricate the bar and chain of
your STIHL chain saw.
5.6.5 Operating Instructions
WARNING
￭ In the event of an emergency:
– Shut off the engine immediately and engage the
chain brake.
￭ To reduce the risk of personal injury from loss of control
and/or contact with the chain:
– Do not use your chain saw with incorrect idle
adjustment. When the idle speed is correctly
adjusted, the chain should not move when the saw

Stihl MS 661 C-M Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	800 mm
Product color	Black, Grey, Orange
Automatic oiling	Yes
Engine displacement	91.1 cm³
Power source	Gasoline
Sound power level	118 dB
Vibration emission	6.9 m/s²
Sound pressure level	105 dB

Weight and Dimensions

Weight	7400 g