[Ron65]

Can someone explain how to adjust the idle speed without having a tachometer?

 

[jullsplv]

I'm not sure you can... or at least this newb couldnt... but if you are trying to do it on the cheap like i was... I made sure mine was returnable if it didnt "fit" right... and yep, 3 hours later i came back because it "didnt' fit right"

 

[surmin69]

Ron,
Invest in one of these, only 30 bucks, and a lifetime of use.




http://www.sears.com/actron-dwell-tach-volt-meter/p-00902165000P?prdNo=1&blockNo=1&blockType=G1

 

[bradley67]

Can someone explain how to adjust the idle speed without having a tachometer?

I never use a tach.
I use a vacuum gauge hooked up to a direct vacuum port on the carb. Adjust your curb idle screws one at a time (try 1/8th turn on each equally a little at a time) until you have the highest vacuum reading.
Make sure engine is at operating temp before you start any adjustments and take your time.

 

[BACK FROM THE DEAD]

I just set it be ear/feel. Never bothered setting with a tach for an "exact increment".