Thanks for all the great advice so far. Had it runnin good the first couple of cuts then it just started gettin worse,had to adjust the low end on the carb each time. This last time I Couldnt get it to run worth a hoot. The reason I think its the pump is that if I push in on the primer bulb slowly it seems to run much better. Havent stripped the carb apart yet to look inside, will have time tomorrow to tinker with it I plan to pick up a new plug while in town tomorrow the one thats in it now looks clean to me but you never know. What would air in the lines indicate, havent looked for that yet. Almost thinking of going to the big bore carb just for grins, would it work while still on the weedwacker? Thanks for all the help so far, this forum is one awesome tool.</p>