I picked up a 2001 with ~2700 miles for my girlfriend.  (I already want my own to mod ryca style).  The bike was left non running for several years, I'm not sure how many, but at least 2, and based on mileage which I expect is correct never saw real regular use.  

So I've rebuilt the carbs and replaced  the main jet with a 150. Everything seems up to snuff to me, and was cleaned as I went.  It's all back together and has been around the block a few times.  At first the bike didn't want to idle but I adjusted the float and that helped.  It still seems to be running lean and hot.  Hot enough to discolor the pipe with just 15-20 minutes or run time, with slow <25 mph jaunts around the neighborhood.  

It idles a little slow by my ear, and only starts/runs with the choke open.  I've keep the engine speed up manually with the throttle, and have the idle speed screw all the way in, for max idle speed.

I removed the brass plug and have accessed the air/fuel mix screw and have it set at a middle distance b/w all the way in and out currently.  I thought middle ground was a decent place to start.
 
1st question... does screwing in or out make the mix "rich"  I've read several posts here but am still confused.  Reference to clockwise/counterclockwise would be appreciated.

I'm thinking perhaps the pilot jet or some other part of the carb is somehow still clogged and that's part of the reason it wont idle.
thoughts?

I'm approx 1K elevation, with stock air box and exhaust.

All thoughts/suggestions appreciated before I pull the carb to check it all out again tomorrow.

1st and 2nd gear, I may have briefly gotten to 3rd, but didn't stay long.  I wasn't wrapping out the engine by any means.  Edit.. or lugging it.

I don't think so, it lugged a bit when I upshifted but I kept the engine speed higher than 1K for sure... well as sure as My ear can be

If it won't idle, then most likely it is a problem with the pilot circuit.  Were you able to look through the pilot jet and see a tiny bit of daylight before you put it back in the bike?  My best running was with a #150 main, #50 pilot, and 2 washers on the needle instead of the white spacer.

The idle mix screw leans the engine when turned in (clockwise), and richer when turned out (counterclockwise).  You should start at a 1.5 turns out setting, then set the screw by adjusting it while idling with the engine warm.  Turning the screw out more than 3 turns does nothing additional as the orifice is unrestricted after the needle is out that far.  The best running should occur somewhere between 1.5 - 2 turns from lightly seated.  If you have to turn the screw in less than 1.5 turns for best running the pilot jet is too big.....more than 32 turns out and the pilot jet is too small. -v1

Here is how you adjust the idle mixture screw.....the engine has to be warmed up and at a somewhat slow idle speed to be able to hear what is happening, you can turn the idle speed back up after you have made the adjustment.

https://www.youtube.com/watch?v=zm5mB3R8Ucw

Thanks Dave and Justin!  I'll check out the video next and then the idle tomorrow and update.  I didn't hold the pilot jet up to the light (wish I had now).

Edit:  I put the pilot back in without writing down the size.  I didn't do the spacer adjust as I only wanted to change one thing at a time.  I assume both are still stock, they looked to be untouched to me.  

I don't remember where the vacuum comes from that raises the slide.

Yeah, but how is it routed to get on the slide? Might hafta load the CD,,

nof1 wrote on 07/26/15 at 12:42:01:


BINGO! that's all you have to do.  There's no other vac lines, only jog.