Frustrated!!!!!

[dn1911]

trying to tune after full exhaust change (HMF Ballance pro) ona 450R
i have a 180 main but i can't get to the needle to adjust it or the fuel screw can anyone help quick trying to get ready to ride tomarrow!!

[sprtrx300ex]

If the 450r carb is anything like a 400ex card, then you want to unscrew the triangle shaped cover on the top. look down at the end of the lifter arm and there will be 2 screws. unscrew them and unscrew the screw at the top of the lifter arm. you will now be able to lift up the arm, exposing the top of the needle. lift it out and adjust it. I think thats it, its been a while

also, a magnetic screwdriver is VERY handy when doing this. Becareful not to strip the screws, they are brass.

Good Luck!