The Stihl MS 661 C-M is a high-performance chainsaw designed for professional use. This chainsaw is ideal for felling large trees in large quantities, thanks to its impressive power-to-weight ratio and advanced engine management technology. The MS 661 C-M features Stihl M-Tronic, which ensures optimal engine performance and 20% greater fuel efficiency compared to the previous model.

Key Features

• Stihl M-Tronic Engine Management: Automatically adjusts the engine for optimum performance, reducing the need for manual adjustments.
• ElastoStart Handle: Reduces the effort needed to start the engine, making it easier to get to work.
• Ematic Lubrication System: Ensures efficient chain lubrication, extending the life of the saw chain and guide bar.
• IntelliCarb Compensating Carburetor: Maintains optimal engine performance even under varying operating conditions.
• Long-Life Filter System: Uses HD-2 filter elements to provide longer run times between maintenance.
• High Output Adjustable Oiler: Allows for precise control over chain oil feed rate.
• Reduced Vibration: Designed to minimize operator fatigue with less vibration.

Specifications

Engine

• Displacement: 91.1cc
• Engine Power: 5.4kW
• Power Source: Gas

Powerhead

• Weight: 7.56kg

Guide Bar

• Recommended Lengths: 40cm to 80cm

Fuel and Oil

• Fuel Capacity: 825cc
• Chain Oil Capacity: 360cc

Chain

• Type: Oilomatic 33 RS3

Additional Features

• Chain Sprocket: Toothed wheel that drives the chain
• Chain Catcher: Reduces risk of operator contact with the chain if it comes off the bar or breaks
• Rear Hand Guard: Protects operator’s right hand from contact with the chain
• Decompression Valve: Eases engine starts
• Air Filter: Filters the air entering the engine
• Spark Plug: Ignites fuel-air mixture in the engine
• Master Control Lever: For starting, running, and stopping the engine
• Throttle Trigger: Controls engine speed
• Oil Pump Adjusting Screw: Serves to adjust chain oil feed rate