Have 93? Bayou 300 4x4. Stock carb sonic cleaned and needle seat polished and worked for awhile. But started overflowing again. I had a couple Chinese carbs one for the bayou and one for a 01-06 350 rancher. The bayou Chinese carb would start and idle but die giving it any kind of throttle. The one for the Honda works quite well actually. 130/45 vs 128/40 for jetting which I guess would help with the crappy ethanol gas we have. So my questions are why would the first carb just die? Too lean maybe? Pilot screw made no difference. Honda carb works but doesn’t require choke even in the current 45 degree weather which would seem rich, and it does seem run a bit fat. I have the pilot screw 2 turns out, does turning it in lean it out a bit? I wish I was better at dialing carbs in. Oh the Honda carb did bog in the mid range cold but was fine when warmed up.

 

The idle mixture jets are just that, for adjusting the mixture when on idle, once on the main jet this screw doesn't do much, as most fuel is coming through the main. Honda main jets are adjustable, you fit the diaphragm needle circlip into a different notch. Not sure if this needle can be altered on the Kawasaki carbs. Your Honda carb seems close to "right", don't mess with it. Regarding the float needle, they can go bad, the tiny plunger at the float end can stick, so you may need a new needle, but most flooding is caused by dirt in the tank jamming the needle open, fitting a filter, or a particularly thorough tank clean, will cure this. If a carb suddenly "just dies" you have a blocked jet. Poor performance can be wear, but this comes on slowly, even with a holed diaphragm they usually work, but badly.