When I first go to us my motor it runs good, it will start up on the first pull and run for a good half hour then it slows down and shuts off, then it won't start, ill leave it alone for awhile and it will start again and run for 10 min but then stops and won't run again, I cleaned the spark plugs, cleaned the carb, changed the tank and hose, I don't understand what the issue is, if anyone can help I'd really appreciate it , thanks kyle