Was it you who posted using a vacuum gauge to adjust idle mix.? A few of us are curious about this could you post here or in the topic "crayceaft 686 jetting" or something like that. Thanks.

 

I believe the idea is to get the needle as close to steady as possible. But I am not 100%

 

I dug it up.
Here you go
I had it printed, but with no user name just his signature. I normaly can't remember squat, but I really liked the signature.

"01 Raptor-cool color of creased"

always made me laugh.

 

Yep, I had posted on that before. Get an automotive style vacuum guage....
1st: Slip it onto the nipple atop the left carb too head intake boot.
2nd: You need a tool too adjust the idle circuit(s) while the engine is running....I used a flexible screwdriver....but easier tools are available.
3rd: Start the engine and observe what the guage tells you. Turn the idle circuit in until the engine starts running rough. Now slowly turn the idle circuit out until you have the HIGHEST, most STEADY. You will have too do this several times too make sure you have the best setting. Don't just find the spot that reads the highest...but is erratic.
4th: Go too other side and repeat the 3rd step.
5th: Repeat steps 3 and 4 at least 2 more times too make sure the carbs are in sync and working together. The more times you repeat the process the closer too perfect the idle circuit will be. Idle circuit problems GONE.

 

Thanks for digging that up Ward! I almost forgot about that signature...LOL. Also, that post makes me remember the wild ride after the carbs partially blew off and the Rappy hung WIDE OPEN.