The STIHL® MS 661 C‑M MAGNUM® is a high‑output professional chainsaw engineered for extreme forestry, logging, and large‑diameter woodcutting applications. Built to handle continuous high‑load cutting with extra‑long guide bars, this MAGNUM® configuration delivers massive torque, fast acceleration, and consistent performance in the toughest working conditions.

Key Features

• 91.1cc gas-powered engine delivers exceptional torque for heavy‑duty felling and bucking
• 36in guide bar provides maximum reach for large‑diameter timber and demanding forestry work
• MAGNUM® configuration designed for sustained high‑load, professional operation
• STIHL M‑Tronic™ engine management system automatically adjusts for temperature, altitude, and fuel quality
• Decompression valve reduces starting effort on the high‑compression engine
• STIHL® Anti‑Vibration System helps minimize operator fatigue during extended cutting sessions
• Pre‑separation air filtration system extends air filter life and reduces maintenance intervals
• Side‑access chain tensioner allows quick, convenient chain adjustments
• Toolless fuel and oil caps with retainers simplify refueling and routine maintenance

(Model number 1144‑200‑0336)

Why It’s a Smart Pick

The STIHL® MS 661 C‑M MAGNUM® with a 36in bar is a smart pick for professional loggers and forestry crews who need uncompromising cutting power with long‑bar capability. With its massive engine output, intelligent electronic engine management, and MAGNUM®‑grade durability, it’s built to perform reliably in the most demanding felling and bucking applications.