Weather it was my Mac, the Poulan I bought to replace it, or the Husky. Start procedure for me was/is always the same. Prep saw,(chain,gas,etc.) full choke it in the off position,full throttle.2-3 pulls, flip switch to on,lock throttle 1/2, pull. 1-2 pulls always did it, unless there was something wrong,carb needed adj.,plug fouled out, they always started. Maybe I just get lucky. gypsyman