Click to expand Tap to zoom Click to expand Tap to zoom Click to expand Tap to zoom Click to expand Tap to zoom Stihl MS 661 C-M Petrol Chainsaw SKU Original price £1,532.50 - Original price £1,557.50 Original price £1,532.50 £1,210.68 £1,210.68 - £1,230.43 Current price £1,210.68 £1,230.43 ex VAT £1,476.52 inc VAT | / Availability: Out of stock Availability: 1 in stock, ready to be shipped Choose a variant 71cm / 28" - £1,210.68 90cm / 36" - £1,230.43 Choose a Chainsaw Bar Length 71cm / 28" 90cm / 36" Quantity Add to cart Stihl MS 661 C-M Petrol Chainsaw The Stihl MS 661 C-M Petrol Chainsaw is a high-performance professional saw built for the toughest forestry tasks. Designed for cutting large timber and demanding hardwood applications, it delivers exceptional power, durability and reliability in extreme working conditions. Maximum Power for Heavy-Duty Forestry The MS 661 C-M is engineered for high-output performance, making it ideal for felling, cutting and processing large hardwood. Its robust construction ensures reliability in the most demanding professional environments. Advanced M-Tronic Engine Management Stihl M-Tronic electronically controls ignition timing and fuel metering to deliver optimal performance at all times. The system automatically adapts to changing conditions such as temperature and altitude, ensuring consistent power and efficient operation. Efficient 2-MIX Engine Performance The Stihl 2-MIX engine provides strong cutting performance while reducing fuel consumption and emissions. Four-channel technology improves combustion efficiency, delivering high torque and reliable output for heavy-duty applications. Durable Design for Long Service Life The HD2 air filter system protects the engine from fine dust, extending service intervals and reducing wear. The compensator system maintains consistent performance even as the air filter becomes contaminated, allowing longer periods between maintenance. Optimised Lubrication and Reduced Consumption The Ematic system and controlled-delivery oil pump ensure efficient lubrication, reducing oil consumption by up to 50%. Adjustable oil flow allows the saw to be adapted to different cutting conditions. Easy Operation and Maintenance The decompression valve reduces the effort required to start the chainsaw, while the simple start system allows quick restart after stopping. Tool-free fuel caps, captive nuts and side-mounted chain tensioning make maintenance straightforward and efficient. Comfort and Control During Use The Stihl anti-vibration system reduces strain during extended use, helping improve comfort and control when working on demanding tasks. Key Features High-performance professional petrol chainsaw Designed for large timber and hardwood forestry Stihl M-Tronic for automatic engine management Stihl 2-MIX engine for efficient performance HD2 air filter system for extended service life Ematic system reduces oil consumption Decompression valve for easier starting Side-mounted chain tensioning for quick adjustment Tool-free fuel caps for easy refuelling Anti-vibration system for improved comfort Specifications Displacement91.1 cm³ Power5.40 kW Engine power7.30 HP CO2 emissions679 g/kWh Device weight (without fuel)7.5 kg System weight (without fuel)9.22 / 10.38 kg Power-to-weight ratio1.40 kg/kW Bar length71 / 90 cm (28 / 36 in) Groove width1.60 mm Saw chain pitch3/8" Device length (with bumper spike)467 mm Sound pressure level105 dB(A) Sound power level115 dB(A) Vibration level left6.9 m/s² Vibration level right5.6 m/s² Next Day Delivery In stock items dispatched the same day if ordered before 3pm