STIHL MS 661 C-M Petrol Chainsaw
SKU: MS 661 C-M
STIHL MS 661 C-M Petrol Chainsaw
SKU: MS 661 C-M
Price range: £1,441.15 through £1,465.15
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The STIHL MS 661 C-M Petrol Chainsaw is an extremely powerful professional petrol chainsaw designed for demanding forestry, large-scale felling and timber harvesting applications. Delivering an impressive 5.4kW of power, STIHL M-Tronic engine management and outstanding durability, it is built for professional users who require maximum cutting performance in the toughest conditions
The STIHL MS 661 C-M Petrol Chainsaw is one of the most powerful professional chainsaws in the STIHL range, engineered specifically for intensive forestry, large timber processing and professional harvesting operations. Producing an impressive 5.4kW of power, the MS 661 C-M combines exceptional cutting performance with advanced engine technology, making it the ideal choice for professional foresters, arborists and contractors working with large-diameter timber.
At the heart of the MS 661 C-M is the advanced STIHL M-Tronic electronic engine management system, which automatically adjusts ignition timing and fuel metering based on operating conditions such as temperature, altitude and fuel quality. This intelligent technology ensures optimum engine performance, excellent acceleration and consistently high torque without requiring manual carburettor adjustment.
Powered by a high-performance STIHL 2-MIX engine, the chainsaw delivers excellent fuel efficiency and reduced emissions while maintaining outstanding cutting power. Combined with the advanced HD2 filtration system and durable construction, the MS 661 C-M is built for prolonged professional use in demanding forestry environments.
For operator comfort, the saw features STIHL’s advanced anti-vibration system, reducing vibration transfer to the handles and helping minimise fatigue during extended working periods. The decompression valve further improves usability by reducing the effort required during starting.
Designed to withstand the toughest forestry conditions, the MS 661 C-M features a heavy-duty construction, captive nuts, side-mounted chain tensioning and a controlled-delivery oil pump, making maintenance straightforward while maximising reliability and productivity.
For professional users who demand maximum performance and durability when tackling large-scale felling and timber harvesting work, the STIHL MS 661 C-M remains one of the premier chainsaws available.
The MS 661 C-M is available with either a 28″ (71cm) or 36″ (91cm) Guide Bar & Chain. Please select your preferred blade length from the dropdown menu.
Exterior design of STIHL guide bars are subject to change. Technical specifications remain the same.
Table of specifications
Displacement
91.1 cm³
Power
5.40 kW
Engine power
7.30 HP
CO2
679 g/kWh
Device weight without refuelling
7.5 kg 1)
System weight without refuelling
9.22 / 10.38 kg 2)
Power-to-weight ratio
1.40 kg/kW
Bar length
71cm / 28" - 90cm / 36" 3)
Saw chain pitch
3/8 "
Device length with bumper spike
467 mm 1)
Sound pressure level
105 dB(A) 4)
Sound power level
115 dB(A) 4)
Vibration level, left
6.9 m/s² 5)
Vibration level, right
5.6 m/s² 5)
Technical Notes
1)
without guide bar and saw chain without guide bar and saw chain
2)
with guide bar and saw chain with guide bar and saw chain
3)
The actual cutting length is shorter than the specified bar length The actual cutting length is shorter than the specified bar length
4)
K-value according to Directive 2006/42/EC = 2.0 dB(A) K-value according to Directive 2006/42/EC = 2.0 dB(A)
5)
K-value according to RL 2006/42/EG = 2 m/s² K-value according to RL 2006/42/EG = 2 m/s²
features
STIHL M-Tronic
The fully electronic STIHL M-Tronic system automatically adjusts engine settings according to: Ambient temperature. Altitude Fuel quality. Operating conditions. Resulting in: Optimum engine performance. Improved starting. Maximum power output. Reduced manual adjustment
STIHL 2-MIX Engine
The advanced 2-MIX engine provides: Lower fuel consumption, Reduced emissions, High torque output, Excellent cutting performance. Compliant with current EU Stage V emissions requirements.
HD2 Air Filtration System
The HD2 filter protects the engine against even the finest dust particles. Benefits include: Longer engine life, Reduced wear. Extended maintenance intervals, Excellent filtration performance. The filter is also water and oil repellent for improved reliability in challenging environments.
Variable-Output Oil Pump
The controlled-delivery oil pump allows lubrication to be adjusted according to cutting conditions. Benefits include: Reduced oil consumption, Improved efficiency, Up to 50% lower oil usage, Increased lubrication for longer guide bars when required.
STIHL Ematic Lubrication System
The STIHL Ematic system ensures chain oil is delivered precisely where required. Benifits include: Reduced oil consumption, Enhanced chain lubrication, Improved cutting performance, Lower operating costs.
Side-Mounted Chain Tensioning
The side-mounted chain tensioner allows fast and safe chain adjustment without working near the sharp chain.
Captive Bar Nuts
The sprocket cover nuts remain attached during maintenance, helping prevent loss when changing chains or servicing the saw.
Manual Decompression Valve
The decompression valve reduces cylinder pressure during starting, making the chainsaw easier to start and reducing strain on the starting system.
Combi Lever with Stop Function
The simplified control system automatically returns to the operating position after shutdown, allowing quicker and easier restarting.
STIHL Anti-Vibration System
Anti-vibration elements reduce vibration transfer to the handles. Increases user comfort, reduced fatigue, improved control, greater productivity during long working days
Tool-Free Fuel Caps
The fuel and oil tanks feature practical tool-free bayonet caps for quick and convenient refuelling.
