The STIHL MS661 C-M is the most powerful professional petrol chainsaw, suitable for all forestry tasks and packed with additional features such as M-Tronic, HD2 filters, economical 2-mix engine. Everything about this chainsaw is designed to be ready when you are no matter the weather and for long cutting sessions.
- Available with a 20-inch, 25-inch, 28-inch, 30-inch or 36-inch bar,
- Highly powerful engine performance,
- Under 11 kilos in weight when fully fueled,
- Easy to clean.
- Electronically controlled ignition (M-Tronic),
- 2-year warranty (domestic only)
AN EXTREMELY POWERFUL CHAINSAW, THE MS661 C-M IS THERE FOR ALL FORESTRY WORK
Firstly, the M-Tronic system manages ignition sequences and fuel metering in every single operating mode, so the user can start the machine without worry and it will keep constant power under load.
Secondly, sensors have a cold or warm start recognition, which will take into account the conditions of the environment such as outdoor temperature and air mass and adjust the fuel/air mixture accordingly. This means you can start and operate the MS661 C-M in even the coldest environments, with maximum performance being delivered within a few seconds.
Lastly, M-Tronic ensures this Stihl chainsaw is easier to start than other models. Now there is just one start position on the combi-lever, just pull on the starting cord a few times and there is immediate acceleration to speed (in all weathers). With the help of ElastoStart compression shock is reduced, so the starting procedure is less demanding on the user’s arms and joints.
Additionally, when using the MS 661 in similar conditions as before, the electronic system will keep the adjustments necessary to ensure optimal performance and the engine starts again.
Built to perform, designed to last.
Being a highly powerful petrol chainsaw, some would expect the MS661 C-M to be harder to maintain – but this certainly is not the case.
For example, this professional chainsaw by Stihl has a long life filter that lasts five times longer than previous models. The air-filter system actually removes harsh dirt particles through a pre-separation system before the air flows through the improved HD2 filter, which filters out even the finest of dust particles.
Additionally, the inbuilt compensator controls the carburettor preventing 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
Consequently, this makes the engine last longer, perform for longer without the need to replace the filter as often. And when the time comes to replace the filter cartridge, it’s quick and easy and can be done without tools.
Furthermore, the MS 661 has a petrol engine which is highly efficient and will reduce fuel consumption. This is achieved by the 2-mix engine and the advancements of the four overflow channels, which swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result is lower fuel consumption and high torque across a broad rpm range.
Available with a large selection of bars.
Whether you are using the 20″, 25″, 28″, 30″ or 36″ bar and chain, the Stihl MS661 C-M has a fantastic cutting performance. The .325″ pitch of the chain is designed to precise cut the timber at high speed without splinter the wood.
What’s more, when using the Ematic chain lubrication system, it ensures pinpoint lubrication of the saw chain links and guide bar rails. This 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%
When changing the cutting attachment, you will not risk losing the nuts on the sprocket. The MS661 is one of the first Stihl chainsaws to be equipped with the captive nuts. A great advantage for all users. Additionally, the side tensioner removes the need to have contact with the sharp saws of the chain.
Finally, this pro chainsaw is equipped with an anti-vibration system, to reduce the vibration at the handles. Therefore, the user will benefit from less fatigue over prolonged use of the power tool.
- Displacement: 91.1 cm³
- Power output: 5.4/7.3 kW/bhp
- Power-to-weight ratio: 1.4 kg/kW
- System weight: 10.28 kg
- CO2: 11 g/kWh
- Sound pressure level: 105 dB(A)
- Sound power level: 118 dB(A)
- Vibration values: 6.9 m/s²
- Tank volume: 0.85 Litre
- STIHL Oilomatic saw chain: 3/8″ RS pitch/type
- Bumper spike: Steel claw
- Sprocket – Number of teeth: 7.7 Z
- Cylinder: Chrome
- Oil pump: adjustable
- Filter: Particle filter HD2
- Chain tensioning: ide chain tension
- Anti-vibration system: Standard AV-System
- Filler cap: Tool-free
- Chain pitch: 3/8″
- EPA Certified Fuel consumption: 2.841 l/h
- Oil tank volume: 400 cm3