Description Stihl MS 661 C-M Petrol Chainsaw The Stihl MS 661 C-M is a high-performance professional chainsaw built for heavy-duty forestry, big timber felling, and demanding harvesting work. Featuring a powerful 91.1 cc engine and advanced M-Tronic technology, it delivers exceptional cutting performance and fuel efficiency. Professional Chainsaw for Heavy-Duty Forestry The Stihl MS 661 C-M petrol chainsaw is engineered for forestry professionals who need maximum power, long-running reliability, and efficient performance in extreme cutting conditions. Ideal for big timber felling, sawmill work, and large-diameter wood removal, this model is built to handle the toughest jobs. High-Torque 91.1 cc 2-MIX Engine Powered by a 91.1 cc 2-MIX engine producing an impressive 5.4 kW (7.3 hp), the MS 661 C-M delivers outstanding torque and cutting force. With a powerhead weight of just 7.4 kg, it maintains an excellent power-to-weight ratio—perfect for fast, controlled felling and bucking. M-Tronic Electronic Engine Management The advanced M-Tronic system continuously adjusts fuel mixture and ignition timing based on temperature, altitude, and workload. This ensures consistent performance, fast acceleration, and eliminates the need for manual carburettor tuning. Smooth Starting & Low Vibration With its ElastoStart handle and decompression valve, the MS 661 C-M provides smoother starts with reduced pulling force. The anti-vibration system minimises operator fatigue, making long work sessions more manageable and comfortable. Heavy-Duty Filtration & Efficient Lubrication The HD2 long-life air filter with pre-separation extends cleaning intervals by preventing fine dust intake. Stihl’s Ematic lubrication system precisely delivers bar oil, potentially reducing overall oil consumption by up to 50%, particularly with long guide bars. Built for Durability & Easy Maintenance Equipped with side-mounted chain tensioning, tool-free fuel and oil caps, and captive sprocket nuts, this saw is designed for fast, efficient servicing. The slim magnesium sprocket cover improves chip flow and balance, while steel bumper spikes increase cutting stability. Compatible with Long Guide Bars Supporting guide bars from 28″ to 36″, the MS 661 C-M gives professionals the flexibility required for large tree removal and high-capacity milling. Paired with a 3/8″ RS chain, it delivers clean, aggressive cutting performance. Key Features 91.1 cc 2-MIX engine delivering 5.4 kW (7.3 hp) Excellent 1.4 kg/kW power-to-weight ratio M-Tronic electronic engine management system ElastoStart handle and decompression valve Advanced anti-vibration system HD2 long-life air filter with pre-separation Ematic oil-lubrication system for reduced consumption Side-mounted chain tensioning & captive sprocket nuts Tool-free fuel and oil caps Slim magnesium sprocket cover for improved chip ejection Compatible with 28″–36″ guide bars and 3/8″ RS chains Specification Feature Details Displacement 91.1 cm³ Power Output 5.4/7.3 kW/HP CO2 679 g/kWh Device Weight (Without Refuelling) 7.5 kg / 9.22 / 10.38 kg Power-to-Weight Ratio 1.4 kg/kW Bar Length 71-90 cm / 28-36 in Saw Chain Pitch 3/8" Device Length with Bumper Spike 467 mm Sound Pressure Level 105 dB(A) Sound Power Level 115 dB(A) Vibration Values (Left/Right) 6.9/5.6 m/s²
