I have a Weed Eater gas hedge trimmer, about 6 years old. Went to run it yesterday and it starts great, runs about 15 minutes and dies. Won't restart. Let it set 10 minutes and it restarts, but runs 15 minutes and dies again. Let it set, restart, dies in 10 minutes. I thought fuel filter but I can't find one anywhere on this thing. Thoughts??? Thanks!!