My weed eater brand lawn mower will not start. I used it a couple of weeks ago but now it won't run. It did get caught out in a sudden pouring rain after I used it and then ran an errand and it rained before I got back. I drained all the gas and replaced it, replaced the spark plug, cleaned the air filter and cleaned the carb. Last week before I did all of that it ran for about 10 seconds and then died but now nothing.