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Selection Gas Chain Saws for Forestry

MS 661 C-M

Professional chain saw

General

MS 661 C-M
MS 661 C-M

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)

$1,699.99*

Versions

Featured Price

Dealers may sell for less. Pricing on all products and accessories will remain in effect until June 30, 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

MS 661 C-M

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

MS 661 C-M

Standard features

  • STIHL M-Tronic (FT) Zoom
    STIHL M-Tronic (FT)

    Fully electronic controlled ignition timing and fuel metering system. The engine management STIHL M-Tronic (M) system ensures optimum engine performance, constant maximum speed and excellent acceleration. Manual carburetor adjustments are not necessary.

  • Heated carburetor (V) Zoom
    Heated carburetor (V)

    FOR RELIABLE OPERATION EVEN IN WINTER. Thanks to carburettor preheating, you can work reliably with your chainsaw even in winter. You can change the operation from summer to winter mode in just one simple step. In the winter setting, pre-heated intake air flows around the carburettor, preventing it from icing up.

  • STIHL ANTI-VIBRATION SYSTEM Zoom
    STIHL ANTI-VIBRATION SYSTEM

    FOR MORE PLEASANT WORK. Vibrations can occur when you put your power tools through their paces, and these are particularly noticeable in the grip area. The buffer and spring elements of the STIHL anti-vibration system reduce the transmission of engine vibrations to the handle area and therefore to your body. The result is that your power tool is more comfortable to hold and your work is much less tiring.

  • Reduced-emission engine technology Zoom
    Reduced-emission engine technology

    2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle. This results in more power with a lower weight, up to 20% lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.

  • STIHL ElastoStart Zoom
    STIHL ElastoStart

    Due to compression pressure, jerky stresses occur when starting internal combustion engines. The damping element in the ElastoStart special starter grip alternately absorbs and releases force according to the compression pattern. The result is smooth, even starting.

  • Tool free fuel caps Zoom
    Tool free fuel caps

    Special caps to open and close the tank cap quickly, easily and without tools.

  • MANUAL DECOMPRESSION Zoom
    MANUAL DECOMPRESSION

    The decompression valve is part of the easy starting system. The valve should be pressed before starting to reduce the compression pressure when starting, as well as the effort needed to pull the starter rope. The decompression valve is semi-automatic; it must be pressed manually before starting, but then closes automatically.

  • STIHL Ematic System Zoom
    STIHL Ematic System

    Compared to conventional bars without Ematic, the STIHL Ematic system reduces the consumption of chain lubricant by up to 50 %, depending on the type of wood and the cutting attachment used. This system comprises a STIHL Ematic or Ematic S guide bar, a STIHL Oilomatic saw chain and a variable-flow or reduced-flow oil pump. As a result, virtually every drop of chain lubricant is delivered to exactly the right spot.

  • SIDE-MOUNTED CHAIN TENSIONING Zoom
    SIDE-MOUNTED CHAIN TENSIONING

    The tensioning screw can be found on the side of chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.

  • CONTROLLED-DELIVERY OIL PUMP Zoom
    CONTROLLED-DELIVERY OIL PUMP

    The exact chain oil output can be adjusted manually for varying conditions, allowing for a reduction of up to 50%.

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
manual icon en / fr 2015-12-02
Download PDF
Download PDF