Very powerful, extremely fast-cutting professional chain saw

  • 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 heated handles and carburetor (MS 661 C-M VW R)

Equipment prices include Pre-Delivery inspection, Set-up and Test Run.

SKU Description Price
MS661CM-18 18" Bar & Chain $1,434.95
MS661CMR-18 18" Bar & Chain - Wrap Handle $1,469.95

Other bar and chain sizes available upon request.

Prices and specs subject to change without notice. Product Special prices are while quantities last.

Specifications

Displacement (cc)91.1
Power output (kW)5.4
Weight* (kg/lb) w/o bar & chain7.4 / 16.3 - 7.8 / 17.2
Available bar length (in)18 - 36
OilOmatic ® saw chain pitch / type3/8" / RS
Chain tensioning at the sideStandard
Chain quick tensioning (B)
Quickstop® super chain brake
Primer pump
Decompression valveStandard
ElastoStart™Standard
Easy2Start™
CompensatorStandard
Toolless filler capsStandard
M-TronicStandard
Electronically heated handle & carburetorMS661CMVWR

Addition Info

Anti-Vibration System – STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.


STIHL ElastoStart – STIHL ElastoStart reduces the shock caused by the compression of the engine during starting. The compression shock is taken away from the user's joints and muscles through a spring or rubber element in the starter handle.


Decompression valve – 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.


Compensator – This controller in the carburetor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn't need to be cleaned until an appreciable drop in power occurs.


Ematic chain lubrication system – The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50%.


Side chain tensioner – 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.


Single-lever master control – All important functions such as start, choke, throttle and stop are operated via a single lever.


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


STIHL M-Tronic (M) – 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.