Stihl MS 661 C-M Instruction Manual

0458-759-8221-C
67
English 29 Emission Control Warranty
– Muffler
– Spark Plug
– Catalytic Converter (if applicable)
– Choke (Cold Start Enrichment System) (if applicable)
– Injection Pump (if applicable)
– Injection Valve (if applicable)
– Throttle Housing (if applicable)
Where to Make a Claim for Warranty Service
Bring the product to any authorized STIHL servicing dealer
and present the signed warranty card.
Maintenance Requirements
The maintenance instructions in this manual are based on
the application of the recommended 2-stroke fuel-oil mixture
(see also instruction "Mixing Fuel"). Deviations from this
recommendation regarding quality and mixing ratio of fuel
and oil may require shorter maintenance intervals.
Limitations
This Emission Control Systems Warranty shall not cover any
of the following:
– repair or replacement required because of misuse,
neglect or lack of required maintenance,
– repairs improperly performed or replacements not
conforming to STIHL Limited specifications that adversely
affect performance and/or durability, and alterations or
modifications not recommended or approved in writing by
STIHL Limited,
– replacement of parts and other services and adjustments
necessary for required maintenance at and after the first
scheduled replacement point.

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