Well, I've gone from no start to start to running and riding it around the block, to the bike dieing after idling to once again no start. Tried this morning and it cranks over strong but does not even cough or spudder.

I am assuming the carbs have become blocked up again since the cleaning I gave them a couple days ago so I guess I'll be pulling the carbs back off today. I'll try to do a more thorough cleaning and get at those mixture screws which are behind the brass plug I circled in the photo above?

Now I know why I went to FI and didn't look back years ago lol but here we are.

Exactly , the red circle.
Part 19 is correct for the oring.

Old models have holes there, i really dont know if that is connected to the crankcase oil, i would let them hang in a way water cant get in.
shouldnt affect idle, my bet is that thing is to catch some evaporative gases and burn them.I really dont know

Quote from: Armandorf on May 23, 2024, 09:19:40 AMExactly , the red circle.
Part 19 is correct for the oring.

Old models have holes there, i really dont know if that is connected to the crankcase oil, i would let them hang in a way water cant get in.
shouldnt affect idle, my bet is that thing is to catch some evaporative gases and burn them.I really dont know

I ordered up part 19 and will replace both orings.

Do you happen to know what I should set the mixture screws at to start, again they were set at 1/4 turn out on one carb and 1 1/4 turns out on the other carb from factory, which seems odd?

Thanks!

2.5 turns, 3 probably

Tonight I installed my rebuilt carbs with the mixture screws set at 3 turns out. The bike fired up with the choke on. Once it warmed up, the idle was slightly high so I adjusted the idle screw until I reached 1500 rpm. However the idle would hang when I hit the throttle. So I adjusted it down to around 1100-1200 rpm. The idle doesn't hang but it does seem quite low. Bike seems fairly happy here though,  I rode it around the subdivision and it seems ok.

Should I try adjusting the mixture screws and then reset the idle or will this not help with gaining a higher idle? Any suggestions would be appreciated!

Thank you @Armandorf & @herennow for all the help!

try to set the idle mixture with the idle stop adjuster a bit low, around 1000 rpm to see how it impacts a quarter turn towards 2.5 turns out.
Ideal mixture at idle should make it idle higher.

beware you need to do this after you ride enough (and i would say 30 minutes minimum), so you are adjusting at operating temperature and not over correcting a cool engine, for that you have the choke.
try it at 2.75 turns out,
also try to feel if engine bogs(even rpm dips) a bit prior to rising rpm if you thrrotle on neutral.
there is a point where it idles more smoothly. You will also notice the bounce of the revs is better and it hangs less.

dont remember exactly, you should look for it but rich/lean affects all of this, if engine dips prior acceleratting, if rpm are too sustained and is slow to return to idle, etc.
another way to test it is to see how well it coasts and climbs from/near idle at 1st and 2nd gear.

Have you checked valves/synched the carbs?

Quote from: Armandorf on May 30, 2024, 08:16:52 PMtry to set the idle mixture with the idle stop adjuster a bit low, around 1000 rpm to see how it impacts a quarter turn towards 2.5 turns out.
Ideal mixture at idle should make it idle higher.

beware you need to do this after you ride enough (and i would say 30 minutes minimum), so you are adjusting at operating temperature and not over correcting a cool engine, for that you have the choke.
try it at 2.75 turns out,
also try to feel if engine bogs(even rpm dips) a bit prior to rising rpm if you thrrotle on neutral.
there is a point where it idles more smoothly. You will also notice the bounce of the revs is better and it hangs less.

dont remember exactly, you should look for it but rich/lean affects all of this, if engine dips prior acceleratting, if rpm are too sustained and is slow to return to idle, etc.
another way to test it is to see how well it coasts and climbs from/near idle at 1st and 2nd gear.

Have you checked valves/synched the carbs?

Thank you for all the help so far, I am still at a low idle (1000-1200 rpm) but it does not hang nearly as long. I am still 3 turns out, I will take it for a longer ride this weekend to get it up to operating temperature. I will try quarter turn increments at a time and see if the idle rises up as I adjust in to 2 3/4 - 2 1/2. I am also going to recheck for vacuum leaks but I am fairly confident the carbs are clean and sealed up with the work that I have done over the past month. I will post how things go when I try adjusting the mixture screws.

I should probably do a sync however I have never done this myself so I would need to research or buy the tool to do so. If you have any suggestions on how to complete the sync with some homemade items that would be great!

Cheers!

the homemade sync tool is a tube connected on both vaccum ports filled with 2t oil, it was posted here and many other sites.
a wood plank(something for structure) ,a round object like a jar cap ,lines for reference to measure, and the tube with oil.
beware of carbs sucking oil. U

you can buy "proper" vacumm gauges form aliexpress for 10 bucks or so...., just sayin 😉😉