Fuel screw stripped !!!

[yamaha6j]

I had dialed in my fuel screw a couple of times at the track yesterday, and noticed it got harder and harder. I think I stripped it. Is there a way to fix it? Or should I just let it stay and use plyers back and forth for now.

[642MX]

Which part stripped? The screw or the threaded hole in the carb?

[yamaha6j]

I don't know yet. I wasn't sure if I should go ahead and remove it completly, or let it stay and use needle nose or something just to get her dialed in. What do you think?

[642MX]

I'd take it apart and fix it.

[rexbond007]

remove the float bowl , that will expose the screw then you can see the damage without having to take the carb off. if its really bad take the carb off.

if it's just the flat screw head replace it with a after market screw.(zipty)

[yamaha6j]

Thanks, I will try it and see. If for some reason it is the threads from the carb and not the screw, what would you do?

[642MX]

Thanks, I will try it and see. If for some reason it is the threads from the carb and not the screw, what would you do?

Chances are its just a stripped screw. If the carb is stripped I'd start with trying Permatex's thread repair kit. Its a liquid-putty stuff that I've used on oil filter drain bolts and a few other projects.

Pull the carb, flip it upside down and keep us posted.

[BC3]

Call Sudco in LA....they will have an answer.

[Ga450owner]

Stock fuel screw is brass and it is softer than the threads - hopefully if it is stripped, it is the screw - remove it and replace with Zipty.

[Yamahafan]

I always put a little assembly lube on the threads of my Zip-Ty fuel screw to ensure it doesn't seize. I have never had a problem with it backing out because the spring tension holds it in place. In any event, replacing the stock fuel screw is the first mod anybody should do.