Janie, those are meant to be tossed rather than repaired. That makes me all the more determined to repair.

You don't need to gap the spark. I try to get my mower spark plugs at Sears--they have a heavy duty one that seems to last longer than others. I don't know if there is an equivalent for line trimmers. I have the previous trimmer that has probably to have the carburetor cleaned. It's like a firm mesh that if you can reach it you can clean it. But you have to know what you're looking at and have time to take it apart. I'll let you know if I ever get it fixed. I figured if I waited to trim until I fixed that one I'd have code enforcement knocking on my door.

SRS