[DiagTech]

So I finally bit the bullet and bought a couple new bikes for me and my son. I had an '07 450x. The '16 is a bit more of a pain in the rear to do stuff to. Removing the fuel screw being the biggest one.

I finished my sons 250 with little problem once I found out about a really screwed up pin blocking access to the screw. Got everything done on mine up to the removal of that screw. I have tried 2 different fuel screws on mine. Neither will install more than a half turn. It then feels like cross threading or incorrect thread pitch. The original screw threads in fine.

If it matters, one was an R&D and the other was a Moose Racing/Zip Ty piece.

Any ideas?

[DiagTech]

In the words of Rosanne Rosanna Dana......

Nevermind

[JimDirt]

LOL ..... what was the issue ?? , was the old O-Ring and washer still in there holding the screw out ??

[DiagTech]

Nothing in there. Just wouldn't turn. I think the threads on the R&D screw were a bit buggered to begin with, but not sure because the other new one wouldn't install either. I just kept turning it in and out slightly and it went.

[JimDirt]

Hmmm... that is strange , both my bikes have R&D screws and they went right in ...

[Back2-2]

For what it's worth -
If that is case the you should take it back out and blow through it - inside to out to be sure the small debris are cleared.

That was a gutsy move - if that would have went south on you it would have been a real challenge to correct. Thread chasers are priceless for those kind of situations.

[JimDirt]

In addition to what Neil mentioned , you might want to contact R&D and explain the situation , they may just send you a new one if its defective , since with messed up threads , it might not adjust correctly , thats the point of having it , is ease of adjustments... plus as he mentioned , if debris gets to the O-Ring , it will damage it and then you will have a lean condition

[DiagTech]

Once I installed it all the way, I did pull it out to inspect it and the carb. It reinstalled fine the second time.

I thought about a thread chase, but I just didn't feel like driving 10 miles to get one.