The STIHL MS 661 C-M is the most popular commercial chainsaw in the world for felling, trimming, and all commercial and forestry applications. This rugged all-rounder comes equipped with STIHL’s environmentally friendly 2-MIX engine technology for lower fuel consumption, reduced emissions, and outstanding cutting performance. The MS 661 C-M also features a heavy-duty (HD2) air filter system with a radial seal to keep out fine dust particles. Combined with the compensator, the STIHL MS 661 C-M runs 20% longer than the MS 660 before requiring a filter clean.

The MS 661 C-M includes STIHL’s M-TRONIC electronic engine management system, which allows the saw to automatically adjust to varying fuel grades, altitudes, and temperatures. With no manual carburettor adjustments needed, starting the saw is easier than ever—just push the start lever to the “on” position and pull. The MS 661 C-M is the clear choice for professionals. Looking for a chainsaw that tackles the toughest jobs? The STIHL MS 880 Magnum® offers unmatched power and durability for heavy-duty cutting.