MS 661 C-M
Professional chain saw
General
The MS 661 C-M chain saw is equipped with cutting-edge technologies for the best possible performance for the logging and harvesting industries. It boasts a high power-low weight ratio and is the lightest chain saw in its engine displacement class. The extra powerful and efficient delayed stratified scavenging engine allows you to work effectively, thanks to its high cutting performance and low emissions. It features the M-Tronic™ fully electronic engine management system, which uses a microchip to control the engine’s ignition timing and fuel supply, taking into account variables such as temperature, fuel quality and elevation. Take it to the max, with minimum effort. Also available with full wrap or heated handles and carburetor (MS 661 C-M VW R)
Versions
Featured Price-
MS 661 C-M - 20" Bar$1,699.99*
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MS 661 C-M - 24" Bar$1,719.99*
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MS 661 C-M - 28" Bar$1,739.99*
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MS 661 C-M - 32" lightweight bar$1,759.99*
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MS 661 C-M - 36" Bar$1,779.99*
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MS 661 C-M - 36" lightweight bar$1,824.99*
*Dealers may sell for less. Pricing on all products and accessories will remain in effect until November 17, 2023. Illustrations and descriptions are as accurate as known at the time of publication and are subject to change without notice. STIHL Limited is not responsible for a printing error, the local STIHL Dealer has the final authority to set product pricing. Pricing valid at participating dealers only while supplies last.
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Technical data

Technical data
Technical data | Value |
---|---|
Displacement (cc) | 91.1 |
Power output (kW) | 5.4 |
Weight (kg / lbs) 1) | 7.5 / 16.5 |
Weight (kg / lb) | 7.5 / 16.5 |
Guide Bar Lengths (Recommended ranges) | 20" - 36" |
Chain Oil Capacity (oz) | 12.2 |
Fuel Capacity (oz) | 27.9 |
Chain | 33RS72E (20”) / 33RS72E (20”) / 33RS84E (24”) / 33RS84E (24”) / 33RS91E (28”) / 33RS91E (28”) / 36RS91E (28”) / 33RS105E (32”) / 33RS105E (32”) / 36RS105E (32”) / 33RS114E (36”) / 33RS114E (36”) / 36RS114E (36”) |
Power output (kW) | 5.4 |
1) without fuel, bar and chain
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Features

Standard features
The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information.
Documents
Owners manuals and safety brochures
Languages | Date | Link |
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2015-12-02 |