by JMorgan » Sun Oct 22, 2017 9:46 am
Speedracer62, I owe you a lot! I followed your fixes putting the R&D FlexJet fuel screw and the 48 pilot jet. It took a bit of tweaking but I finally got my 250x to snap to full rev and right back to idle....just like it's supposed to. Thanks much!
Here's what really surprises me: there is nowhere to find any instructions about correct setting of the fuel screw! I've seen remarks on forums about 1.5 turns, 2 turns.....and my own Honda shop in South Jordan, UT (@ 4,400' elevation) told me 2.5 turns. And the REAL problem is that the stock fuel screw is nearly inaccessible until you pull the carb out! How in the world could anyone even get to the screw to make adjustments??
When all was said and done, my fuel screw needed to be open nearly 3 full turns before things started to behave properly. It was only then that I could get the idle screw to finish the job. So it appears to me that it takes a fairly precise amount of fuel screw to get the bike to idle fast enough so as to close the slide (via the idle screw) enough to stop the airflow so the slide can properly do its job. Anyway, thanks again!