1985 190 E 2.3 idle Speed and Mixture Adjustment

Hello all,
I have a 1985 Mercedes Benz 190E 2.3. I have been working on it for a few days now and have fixed most all of the problems. I had a vacuum
leek that was hard to find. It was hidden under the intake manifold. The hose was completely off; once I put it back on it was fine. But I messed with the idle speed and mixture adjustment. It is the one that needs a hex or Allen wrench on the top of the air filter cover to adjust.
My question is this, is there a default for this setting? Or is it hit and miss? I have it running but it is above 10,000 rpm at idle. What is the manufacture standard idle setting? I think it is between 9k and 7k. I am not sure what it is. Also what direction makes the idle speed go higher or lower, right or left?
By the way don't lend your car to your neighbor! I lent it to her once and she bough it back messed up. Then I lent it to her again and she left it at Kinko's parking lot and not running. I had to have it towed back to my place and fix it myself. I should have learned the first time around.
Anyway any help would be helpful. Also is this adjustment one adjustment or two?
Thanks
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here. All logos and trade names are the property of their respective owners.