Description:

The MS 661 MAGNUM® professional chainsaw delivers the reliable power and rugged dependability you need for felling, de-limbing, and bucking large diameter trees. This chainsaw features a simple, proven, and non-electronic design. A fuel-efficient engine and low-maintenance air filtration system help keep operating costs low, while the STIHL® anti-vibration management system reduces fatigue and improves handling when compared to the previous model, even when using long guide bars. The MS 661 MAGNUM® chainsaw is the perfect partner for forestry, municipal, and tree service professionals.

Features:

• Ematic™ Lubrication System – The Ematic™ guide bar, when used with STIHL® OILOMATIC® saw chain, provides proper lubrication and less oil consumption than conventional methods. Two ramps, strategically placed in the guide bar rail, help contain and direct oil flow to critical areas, reducing bar oil consumption by up to 50%.
• STIHL® ElastoStart™ – The ElastoStart™ starter handle includes a built-in shock absorber that reduces the effort needed to pull the starter cord by smoothing out the peak forces of compression.
• HD2 Air Filter – Washable and designed for long service life, the HD2 air filter offers high filtration performance and extended run times, especially in dusty conditions, while lowering overall maintenance costs.
• IntelliCarb™ Compensating Carburetor – Automatically adjusts the air/fuel mixture to maintain proper RPM when the air filter becomes restricted, using air from the clean side of the filter for improved performance and longevity.
• STIHL® Quickstop® – The STIHL Quickstop® chain brake is designed to stop the chain in certain kickback situations, either manually or by inertia, improving user safety.
• Bumper Spikes – Provide better control and help prevent pull-in during cutting tasks.
• Lightweight Sprocket Cover with Captive Bar Nuts – Lightweight cover design with bar nuts that stay attached for easier, more efficient maintenance.
• Adjustable Automatic Oiler – Allows users to regulate oil flow for different guide bar lengths and cutting conditions.
• Decompression Valve – Reduces cylinder compression during startup, making it easier to pull the starter rope.
• Side-Access Chain Tensioner – Allows for easier chain tensioning using a bar wrench.
• Master Control Lever™ – A single, user-friendly lever for operating choke, throttle lock, and on/off switch, designed for intuitive control.
• Anti-Vibration System – STIHL®'s anti-vibration technology helps minimize fatigue by significantly reducing vibration levels during operation.
• Toolless Fuel and Oil Caps with Retainers – Twist-off design with retainers allows for quick and easy cap removal or tightening—no tools needed.
• Throttle Trigger Lockout – Must be engaged before the throttle can be activated, providing an additional layer of operational safety.

Specification:

• Power Source: Gas
• Powerhead Weight: 16.5 lbs
• Recommended Guide Bar Length: 25 inches
• Chain Type: 3/8" OILOMATIC® RS3
• Chain Oil Capacity: 13.5 oz
• Engine Power: 7.2 bhp
• Fuel Capacity: 28.7 oz
• Displacement: 91.1 cc
• Intended Use: Professional