STIHL MS 261 C-M 18" Gas-Powered Chainsaw the same low exhaust emissions, high fuel efficiency, and robust performance as the MS 261 but comes equipped with advanced STIHL M-Tronic™ technology. This innovative onboard microprocessor automatically adjusts to changes in conditions such as elevation, temperature, fuel quality, and filter status, ensuring peak performance without the need for manual adjustments. The redesigned cylinders and slimmer, ergonomic housing deliver an outstanding power-to-weight ratio, making this chainsaw an excellent choice for professional use across a wide range of cutting tasks. Additional features include the STIHL M-Tronic™ system, Ematic™ Lubrication System, STIHL ElastoStart™, and IntelliCarb® Compensating Carburetor, all designed to enhance reliability and ease of use. Model Number: MS 261 C-M 18