A simply reliable cutting machine. Whether the work calls for seemingly endless storm cleanup or bucking loads of firewood, the CS-4510 delivers power and performance for the long haul. The ECHO CS-4920 rear handle chainsaw features a 50.1 cc professional-grade engine ideal for farmers, ranchers, larger landowners and homeowners. It can be used for a wide range of applications such as limbing, felling, bucking, and cutting firewood. The CS-4920 has side-access chain tensioner for quick chain adjustments, a translucent fuel tank for quick level checks, and a mesh air filter.