IDK about that tutorial, but I recommend this:

https://joshkarnes.blogspot.com/2017/09/fixing-common-gs500-carburetor-issues.html

Now, crackling or "popping" on decel is normal. If it is trying to stall when returning to idle this is known as "idle dip" and indicates your idle speed is set too low. The opposite is "hanging idle", where it slowly returns to idle or hangs at some above-idle speed before going to idle, which indicates your idle speed is set too high. Someone's going to tell you that "hanging idle" means "lean" but don't believe it. Well believe what you want but you'll be chasing your tail trying to tune it if you do. Even on the internet, consensus is not the same thing as fact.

Quote from: The Buddha on February 07, 2020, 11:31:22 AM
Idle speed when hot vs cold should be within 100rpm of each other. With hot being higher.
30 seconds with choke and it should hold idle. 30 mins of riding later it should be no more than 100 rpm over that.
If that is not happening, your mixture is wrong.
If hot idle is much higher than cold idle, you're lean.
If hot idle is a lot lower than cold idle, your mix is too rich.

If it wont return to idle, you may have a leaner than ideal mixture. But really it depends on how much you are higher, if its 100 rpm or so, I'd call it as spot on.

Cool.
Buddha.

Hey Buddha my bike is 135/60/20, youve helped me in some other threads, I have the adjustable air screws set about 1.5 turns out. I got a new air filter and my bike runs much better (I can actually idle at a stop without the choke on lol). But when I start my bike and run for 30 seconds and take off choke the idle is around 1400. After a 40 minute ride when its hot it idles at 900, and will idle with choke off but only barely so. Should I turn my air screws in 1 turn when my bikes cold and see what it idles at cold then hot? It sounds like my bike is way too rich. Thanks!

1400 cold is a shade high, not too bad, I like that ~1200. However 900 hot is low - OK your plugs are burning black ? Check them and let me know.
If its black then I suspect you may have too high a float, or your 135 mains is wrong. 135 is for K&N pod without restrictor. If you have paper stock style filter, you may need to get to 132.5 but how much does it affect the idle. Likely very little. Your problem is float level or some issue like a choke that's not closing or something like that.

BTW those long screws are correctly made to the GS original specs Check that, if they're a different taper or are slightly shorter or what not, you will think they're @ 1.5 but they may be the equivalent of 2 or 3 - whatever.

Cool.
Buddha.

Quote from: The Buddha on March 25, 2020, 06:26:21 AM
1400 cold is a shade high, not too bad, I like that ~1200. However 900 hot is low - OK your plugs are burning black ? Check them and let me know.
If its black then I suspect you may have too high a float, or your 135 mains is wrong. 135 is for K&N pod without restrictor. If you have paper stock style filter, you may need to get to 132.5 but how much does it affect the idle. Likely very little. Your problem is float level or some issue like a choke that's not closing or something like that.

BTW those long screws are correctly made to the GS original specs Check that, if they're a different taper or are slightly shorter or what not, you will think they're @ 1.5 but they may be the equivalent of 2 or 3 - whatever.

Cool.
Buddha.

I replaced the plugs on my bike recently because they were pretty black. Heres a pic:

I didnt tune the air or idle screws after I put on a new carb on. I still need to do that. Would turning in the air screws (thus leaning it out) and lowering the idle screw after a ride fix my problem? Last time I took my carbs off my bike didnt run at all so I had to do it over again 

Turning in the air screw would be good because it wouldnt back my aftermarket extended mixture screws out while I ride too (the vibrations only back it out once it gets to about 3 turns out), and I did compare the air mixture screws to the stock original air screw and youre right theyre both the same length and size.