Stihl MS 661 C-M Instruction Manual

0458-759-8221-C
62
English 25 CSA Standard
24.7 Engineering Improvements
STIHL's philosophy is to continually improve all of its
products. As a result, engineering changes and
improvements are made from time to time. Therefore, some
changes, modifications and improvements may not be
covered in this manual. If the operating characteristics or the
appearance of your machine differs from those described in
this manual, please contact your STIHL dealer or the STIHL
distributor in your area for assistance.
25.1 Chain Saw Class
This gasoline powered chain saw is classified according
CSA Z62.1 as a class 1A saw.
25.2 Definition of the Chain Saw Classes according
to CSA Z62.1
– Class 1A: A fuel powered professional chain saw,
intended for use by trained workers, where the operator is
expected to use the chain saw for extended periods of
time on a daily basis
– Class 1B: A fuel powered professional chain saw for tree
service, limited to a dry weight of 4.3 kg (9.5 lb), intended
for use by trained workers, where the operator is expected
to use the chain saw for extended periods of time on a
daily basis
– Class 1C: A fuel powered consumer chain saw, intended
for general use by homeowners, cottagers, campers, etc.,
and for general applications such as clearing, pruning and
cutting firewood
– Class 2A: An electrically powered professional chain saw,
intended for use by trained workers, where the operator is
expected to use the chain saw for extended periods of
time on a daily basis
– Class 2B: A battery powered professional chain saw,
intended for use in tree service work, limited to a weight of
5 kg (11 lb) with battery
– Chain saws according to CAN/CSA-C22.2
No. 60745-2-13: An electrically powered consumer chain
saw, intended for general use by homeowners, cottagers,
campers, etc., and for general applications such as
clearing, pruning, and cutting firewood
Position of the Master Control Lever: Engine is shut
off
Position of the Master Control Lever: Engine runs or
can fire
Position of the Master Control Lever: Used to start the
engine
Certification/listing mark of CSA
STIHL products must not be disposed of in the
household trash, but only in accordance with local,
state and federal laws and regulations and as
provided in this manual, @ 28.1.
25 CSA Standard

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