Originally Posted by
BrandonRadtke
So I have a 84 250r and I just rebuilt the top end now it leans out when I’m running wide open. The motor revs itself so I have to use the brake to bring it back down to idle. My question is if it didn’t do it before the rebuild it shouldn’t be crank seals right? Would you guys just think it’s main jet? It idles good and plug is dark brown. Just want to know where you guys would start? I will pull stator cover tomorrow to see if there is any oil residue and it doesn’t smoke like it would if the clutch side were bad.