I bought my step son a 110cc atv (not sure of the make, but it looks alot like a yamaha YFZ450) and you can start it up and ride it and all of a sudden it will stop moving. the engine will bog and wont go anywhere. then it will all of a sudden take off on its own at top speed even though the throttle is restricted to about 6 mph. help please i dont want him getting killed on this thing!!!
I had read where the cap on the carb seems to come loose (due to shotty threads) on these causing the carb to open up wide open. doesnt seem to be the case with this one if i remember right when i took a look at it but ill have to check again.
Did you fine the problem? I have this happening with my son's ATV. It accelerates hard when it is first started. I don't want him to ride it until we get this fixed.
This is exactly what happens when the slide in the carb gets stuck. I would start there, then figure out why, if it is new /clean and still sticking, look for burs or polish the slide
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
Mud in My Blood Forum
A forum community dedicated to Off Road Powersport owners and enthusiasts. Come join the discussion about performance, reviews, classifieds, troubleshooting, maintenance, and more! Open to anything that slings mud Including Yamaha, Honda, Kawasaki, and Suzuki.