Stihl BR 800 X Magnum Backpack Blower

Its great when it runs but i cant get it to start consistently. Stihl BR 600 Magnum backpack blower, works great when it runs for clearing leaves and debris. It's been used but still runs strong. Perfect for big yards or if you do landscaping work. Im not sure if it needs a good tune up, but just don’t have the time to figure it out.