08 rev xp tnt 3500 rpm holds for 5-8 secs

[jmvette427]

my daughter bought a used rev xp 500 tnt, engine is 600 cc carbureted mikuni's when warmed up , idle hangs at 3500 rpm when coming to stops, 5-8 secs if you blip throttle it comes down, i have tryed slowing base idle down to no avail, throtlle cable is not too tight. can i adjust air bleed screw rich or lean? any knowns out there? im sorry i am a yammi guy

 

[Canuck_600]

i think it has to do with the mikuni carbs...my 600 Popo does the same thing with Mikuni carbs
it shouldn't be anything to worry about

 

[jimfsr]

you can try to turn the fuel screws to 2 turn out, it may help. But, it is pretty normal to hang there, very common on the TNT