Husqvarna 450 Rancher 20 in. 50.2cc 2-Cycle Gas Chainsaw (Certified Refurbished) Powerful X-Torq engine combines high performance with better fuel economy and lower exhaust emissions LowVib anti-vibration system reduces vibration levels to the operator, reducing fatigue Air Injection centrifugal air cleaning system that removes larger debris particles before reaching the air filter reducing air filter cleanings and improves the engine life Side-mounted chain tensioner allows for easier access to chain tensioning device Snap-lock cylinder cover saves time when changing spark plugs and cleaning