I just rejetted my bike (YFZ 450) and last time out it was running awesome. I then bought and installed a Zip-Ty fuel mixture screw and installed it as per the directions. The stock screw was set up differently in that the o-ring and washer were switched around. In other words, the spring was obviously on first, then the o-ring, and lastly the washer. The Zip-Ty directions show the spring first, then the washer,and lastly the o-ring.

Which way is correct???

My bike right now won't idle or run??

I am going to install the stock screw for now, i guess....

Thanks for any input!!!!!!

Russ

 

when i installed mine i pulled out the old screw, the sping and o-ring came out with it and i transfered those over to the zip-ty exactly how they were on the stock screw.

i didnt even look at the directions ... mine runs great