hello all i have a 1985 yfm 80 moto4 with carb problems . it starts fine but while it is running at idle or driving, it revs itself up. i have to choke it so i can put it in gear. i have had local shop clean the carb and they said they can't find anything wrong with it. when it does rev itself up it is about half thottle. really hope someone can tell what i need to fix this problem. could it be the thottle needle? kids are driving me crazy wanting to ride.

 

well i guess no one knows

 

Well I can tell you one thing. I had the same problem with mine. The old 80cc carbs actaully wear out in the body. I can tell you the easiest fix for it, Is one off of a newer raptor 80cc it is the same bolt on and everything.

 

edit for dual post