Well i was ridin in my woods and it just kinda bogged down and stopped running, pushed it alllll the way back home, we let it sit for a while tried starting it again, got nothin, pushed it down the drveway let the clutch out, and it just backfired once or twice and still nothin.... checked plug, its running a tad bit lean but not enough to make a difference, put another plug in and still nothing, so idk where to start lol