R24,013 incl. VAT

Extremely powerful 5.4kW professional saw with STIHL M-Tronic (M)

Simply the most popular commercial chainsaw in the world for felling, trimming and all commercial and forestry applications. Big timber saw for the toughest jobs in forestry. The M-Tronic guarantees optimum engine performance at all times, while its single start position and stop button function mean easy starting.

The MS 661 C-M is a rugged all-rounder equipped with STIHL’s environmentally friendly 2-MIX engine technology for less fuel consumption, less emissions and outstanding cutting performance. In addition the MS 661 C-M features a heavy duty (HD2) air filter system with a radial seal which keeps out fine dust particles combined with the compensator the MS 661 C-M can now be used for 20% longer than the MS 660 before a filter clean is required.

1 in stock

SKU: STSL-11442000448 Category:

Please note prices are subject to change and stock availability & Prices incl Vat

Technical data

Displacement cm³ 91,1
Performance kW 5,4
Weight kg 1) 7,4
Power-to-weight ratio kg/kW 1,4
Chain pitch 3/8"
EPA Certified fuel consumption l/h 2.841
Oil tank volume cm3 400

1) Without fuel, without bar and chain




The economical STIHL 2-MIX engine with 1-in-4-channel technology convinces with a high torque over a wide speed range. The chainsaw saves up to 20% fuel compared to the same performance STIHL two-stroke engines without 2-MIX technology. Exhaust emissions are reduced by up to 50%.


HD2 Filter


This air filter keeps even the finest dust away from the engine, ensuring a particularly long service life. Thanks to special material, the filter can be washed clean, for example with STIHL Varioclean and warm water.



Decompression valve

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



STIHL M-Tronic(M)

STIHL M-Tronic (M)
For a cold start, the STIHL M-Tronic only needs one start position on the combi-lever. After starting, you can immediately power up to full speed. The amount of fuel required is precisely calculated by the system and supplied as needed. Otherwise, start in position I as usual.



STIHL Anti-vibration System

STIHL anti-vibration system
Intense vibration at the handles of power tools can lead to longer-term effects of blood vessels in the hands and arms. STIHL have therefore developed an effective anti-vibration system where by the oscillations from the machines engine are dampened which significantly reduces vibrations at the handles.




This controller in the carburettor 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.


Captive bar nuts

Captive bar nuts
Bar nuts held captive in the sprocket cover will not get lost when changing over the cutting attachment.




Controlled-delivery oil pump

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




STIHL Ematic System

STIHL Ematic 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 up to 50%.



Additional information

Weight 8 kg
Dimensions 47 × 30 × 33 cm



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