I got a 2007 YFZ 450 I can get it to start off the starter it turns over by won’t fire and I have to push start it then it runs good but back fires when you let off the gas and then I let off the gas completely it shuts it’s self off so you think that I need new valves or adjust the valves
2007 Yamaha YFZ 450 Backfire
in Yamaha ATV Forum
Posted
I got a 2007 YFZ 450 I can get it to start off the starter it turns over by won’t fire and I have to push start it then it runs good but back fires when you let off the gas and then I let off the gas completely it shuts it’s self off so you think that I need new valves or adjust the valves