Chainsaw

Stihl MS 660

2-Stroke

The Stihl MS 660 is a 91.6cc 2-stroke professional chainsaw and the highest-displacement standard-production model in Stihl's MS lineup. Produced from the late 1990s through the 2010s, it became the benchmark for extreme-duty milling, old-growth felling, and large-diameter rescue cutting. The MS 660 accepts guide bars up to 36" and runs a Walbro HD carburetor <!-- verify: stihlusa.com --> demanding meticulous fuel system maintenance at this displacement. Stens and Oregon produce extensive aftermarket parts inventories for the MS 660 given its widespread professional use and long production run. The MS 660 superseded the Stihl 066.