jetting

[bigorangehmf]

I have installed a full yoshimura exausht system. They recommended a 150 i went with a 155. I truned the mixture screw out 3.5 truns. The LTZ 400 runs great, but i can not get the idle down it is way to high. Can some one give me advise on what is causeing this. when i try to idle the bike down using the idle screw it don't work, The bike just idle real high. HELP PLEASE

[kfx400isdashiz]

try messin with the mixture screw. make sure the proper slack is in your throttle cable.

[jonboy]

Yeah i agree with Kfx400isdashiz. Checking the cable adjusment would be my first step then maybe your mix screw. May even want to see if the bushing below the nozzle is set correctly some times poeple overtighten and egg them out when jetting.