Stihl STIHL MS661 C-M Chainsaw Engine - Complete with 30" Bar & Chain - STIMS661

The STIHL MS 661 C-M petrol chainsaw is built for professionals who need uncompromising power, precision, and reliability in demanding forestry and heavy-duty cutting applications. Designed to tackle large timber with ease, this high-performance chainsaw delivers exceptional cutting speed and torque when it matters most.

Powered by STIHL’s advanced 2-MIX engine, the MS 661 provides outstanding fuel efficiency while reducing emissions—without sacrificing performance. The intelligent M-Tronic engine management system automatically adjusts fuel and ignition settings, ensuring optimum performance in all working conditions, whether you're operating in cold weather, high altitudes, or variable loads.

Engineered for long days on the job, this saw features an excellent power-to-weight ratio and an advanced anti-vibration system to reduce operator fatigue. Its rugged construction ensures durability in the toughest environments, making it a trusted choice for professional forestry, tree felling, and timber harvesting.

Practical, user-focused features such as side-mounted chain tensioning, tool-free fuel caps, and a high-performance HD2 air filtration system make maintenance quick and straightforward—keeping downtime to a minimum and productivity high.

If you're looking for a professional-grade chainsaw that delivers serious cutting power and reliability, the STIHL MS 661 C-M is built to perform.

• High-performance 91.1cc engine for demanding forestry work
• STIHL M-Tronic system for automatic engine optimisation
• Advanced 2-MIX engine for improved fuel efficiency and lower emissions
• Excellent power-to-weight ratio for better handling
• Anti-vibration system for increased operator comfort
• HD2 air filtration system for longer service life
• Side-mounted chain tensioning for easy adjustment
• Tool-free fuel and oil caps for convenience
• Adjustable oil pump for precise chain lubrication