Husqvarna 450 Rancher 18" Bar 50.2cc 2 Cycle Gas Chainsaw, Certified Refurbished Husqvarna 450 Rancher 50.2cc 18" 3.2Hp Gas Powered Chain Saw Air Injection - Centrifugal air cleaning system removes larger dust and debris particles before reaching the air filter. This results in reduced air filter cleanings and improved engine life. X-Torq - Delivers lower fuel consumption and reduced exhaust emission levels in accordance with the worlds most stringent environmental regulations Quick-release air filter - Facilitates cleaning and replacement of the air filter. Ergonomic rear handle - Increased comfort with soft inlay, ergonomic trigger and asymmetrical handle.