Scrambler 50 carb issues

[ktm868]

I have a 2003 Polaris Scrambler 50 that is having issues when running at wide open throttle. the carb and jets has been cleaned along with replacement of the fuel and air filter.

Currently the bike runs fine down low but once you get the bike Tapped Out it starts to bag up top I am thinking that it is starving for fuel and that one of the Jets were gummed up but that is not the issue. Also the oil reservoir has plenty of oil for the oil injection. Should I go to a bigger main jet?

[ktm868]

Also I replaced the spark plug and it smokes like a chimney

[Faux Sho]

I know this is a bit old, but I had a neighbor dealing with the same issues.

 

He dropped off his daughters 50 at my house hoping I could fix it.  I replaced the carb with a new one with a manual choke and installed a fuel filter.  He hasn't had any issues with it since I did the work in April.

 

Not sure it will fix your issues, but it seems to have fixed his.

Edited July 12, 2016 by Faux Sho