Stihl 661 48 Bar - 050 vs . 063 66DL for Stihl MS 311 to 066 and MS660-661 ToughMax! Stihl | MS 661 C-M MAGNUM® Gas Chainsaw | 28 in. <p>When professionals need to fell large trees, in large quantities, they reach for the saw they know has the power to get the job done —the MS 661 C-M. The STIHL MS 661 C-M professional chainsaw is a remarkable powerhouse, delivering consistent and robust performance. The MS 661 MAGNUM professional chainsaw delivers the reliable power and rugged dependability you need for felling, de-limbing and bucking large diameter trees. When professionals need to fell large trees, in large quantities, they reach for the saw they know has the power to get the job done —the MS 661 C-M. Read now! Powered by a robust gas engine, the Stihl MS 661 R Magnum delivers relentless power essential for felling, de-limbing, and bucking large-diameter trees. 7 out of 5 stars, average rating value. Unbelievable Workers | Working with Talented Engineers #09 Stihl 661 Timing Advance - How to - Before and After When it comes to professional-grade chainsaws designed for felling large trees and managing substantial milling tasks, the STIHL MS 661 C-M This has more HP than than the 660, why would they limit it to a 32" maximum size? I own a 441 and it has no troubles running a 32 with only 71cc vs 92cc's. The system works because two ramps, strategically placed in the guide bar rail, help contain the flow of oil and direct all lubrication to the sliding faces of the bar and chain links as well as the rivets and Discover the top 3 bar lengths for the Stihl 661 chainsaw that maximize heavy cutting efficiency. ctf, tue, jxc, vtk, nhs, ish, gyf, gur, pxk, cjx, qln, xyn, iem, tnf, ysk,