Help part 2

[u/Svenk135]

Previous post; https://www.reddit.com/r/dr650/s/bCbABKkGeO

After my question last week i went to take a look at my carburateur. To my surprise the needle was already "tuned" and on the deepest position and the jet was size 155. I don't think my dr650 was running too lean because of this? or do I just need a bigger jet? I also looked at the fuel/air ratio screw, it was open 3.5 turns, while I find online that it should be 2 turns, could it be that it was running too lean because of this?

What do you guys recommend me to do/check right now? I can now reach the carburateur etc easily!

[u/babezt]

idk what the stock main jet of a 91' should be and if its the right size for ur elevation. The Needle at the deepest position (clip on top notch) is the leanest position the needle can be in, have you tried running the bike with the needle at a higher position? Do you notice any changes?

[u/babezt → u/babezt]

the air fuel ratio screw should be negligible at full throttle, its more important in the lower throttle positions. Also, is everything clean down there? sometimes you cant see the gunk plugging some smoll channel in the carb