STIHL MS 251 C-BE 18-In Gas Chainsaw with Easy2StartThe STIHL MS 251 C BE Chainsaw features all the comfort and ease of the MS 251, but is easy to start and adjust on the fly. The MS 251 C BE is perfect for felling small trees, pruning and thinning, and cutting firewood simply and efficiently. And with up to 20 percent fuel savings and 50 percent reduced emissions (as compared to previous models), you can enjoy a longer run time while feeling good about your impact on the environment. A Quick Chain