The gas powered ECHO chainsaw CS-400 is a rugged, professional-grade 18 in. chainsaw that cuts logs with up to a 32 in. Dia. This chainsaw's cutting power makes it great for cutting firewood. Packed with commercial-grade features for easy use and maintenance, the CS-400 includes a reduced-effort starting system and a 40.2 cc professional-grade, 2-stroke engine that delivers ample power for tough jobs. This built-to-last engine is also protected by a heavy-duty air filter and engine air pre-cleaner to protect against dust and dirt, so you can count on peak performance for years.