Echo CS-4010-18 Chain Saw 18" Bar Professional Rear Handle 41.6cc EngineEcho CS 4010 18 Chain Saw 18" Bar Professional Rear Handle 41. 6cc Engine With a 41. 6 cc engine, lightweight construction, and intuitive features, the CS 4010 is the perfect homeowner saw. The CS 4010 is ideal for trimming and limbing as well cutting firewood or for storm clean up. Features: 41. 6 cc professional grade, 2 stroke engine For outstanding performance and durability Momentary stop switch Automatically returns to "ON" position i 30