Description:

When professionals need to fell large trees, in large quantities, they reach for the saw they know has the power to get the job done — the MS 661 C-M. Featuring an impressive power-to-weight ratio and STIHL M-Tronic™ engine management technology, the MS 661 C-M chainsaw also delivers less vibration and 20% greater fuel efficiency than the previous model. Other features include a long-life filter system using HD2 filter elements to provide longer run times between maintenance, an ElastoStart™ handle, and a high output adjustable oiler.

Features:

• STIHL M-Tronic™ – Intelligent engine management system automatically adjusts for changes in fuel quality, elevation, and air filter condition—no carburetor screws to set.
• Ematic™ Lubrication System – Directs oil efficiently to key parts of the bar and chain, reducing oil consumption by up to 50% when used with STIHL OILOMATIC® chain.
• STIHL ElastoStart™ – Starter handle with built-in shock absorber reduces effort and stress on your hands during cranking.
• IntelliCarb™ Compensating Carburetor – Adjusts air/fuel mixture automatically when the air filter becomes dirty, ensuring consistent performance.
• STIHL Quickstop® Chain Brake – Stops the chain in a fraction of a second in certain kickback situations to help reduce the risk of injury.
• HD2 Air Filter – Washable, long-life air filter with excellent dust resistance for longer service intervals and better engine protection.
• Bumper Spikes – Provide leverage and control for easier cutting.
• Adjustable Automatic Oiler – Lets users increase or decrease lubrication depending on bar length or cutting conditions.
• Decompression Valve – Reduces compression for easier starting by venting cylinder pressure while cranking.
• Lightweight Sprocket Cover with Captive Bar Nuts – Makes chain and bar maintenance more efficient and prevents losing nuts.
• Side-Access Chain Tensioner – Makes it easy to adjust chain tension with a bar wrench.
• Master Control Lever™ – One easy-to-use lever operates choke, throttle lock, and on/off switch.
• Anti-Vibration System – Reduces vibration levels to minimize operator fatigue and increase comfort.
• Toolless Fuel and Oil Caps with Retainers – Easy-open design for fast refueling and oil filling—no tools needed.
• Throttle Trigger Lockout – Safety feature that must be engaged before the throttle can be activated.

Specification:

• Power Source: Gas
• Powerhead Weight: lbs16.5
• Guide Bar Length (Recommended): 28 inches
• Oilomatic® Chain: 3/8" RS3
• Chain Oil Capacity: 13.5 oz
• Engine Power: 7.2 bhp
• Fuel Capacity: 28.7 oz
• Displacement: 91.1 cc