this thing is laways having issues with running right. bought a new carb for 100 bucks and it ran great for about 2 hrs and now just keeps dieing...2 stroke ksf 50..i swear.. i work on it more than the other 3 quads combined...
needin to trade up to a 4 stroke 90 i think ..but in the meantime its givin me fits ...
Is there a lot of hours on the motor? Maybe the compression is low.
Crank seals or compression
It seems that most of the smaller Kid's Quads Suck We have Had a KFX 50,KFX 80,Polaris Predator 90 all had running issues,The KFX 80 was the Best of the bunch & The Predator 90 was by far the worst,All are gone now Replaced by A Honda Recon 250 ES that has been trouble Free.