Ed, The idle screw on the front carb opens the throttle plates by moving the linkage in the direction it would go when you give it the gas. This raises the idle speed and opens the plates just a little tiny bit. When you let off it returns to where you placed it to keep the same idle speed. Ron Allyn Swartley [Non-text portions of this message have been removed] Yahoo! Groups Sponsor ADVERTISEMENT <http://rd.yahoo.com/SIG=12cdhj4tk/M=267637.4116719.5338353.1261774/D=egro upweb/S=1705123905:HM/EXP=1069453536/A=1853618/R=0/*http://www.netflix.com /Default?mqso=60178338&partid=4116719> click here <http://us.adserver.yahoo.com/l?M=267637.4116719.5338353.1261774/D=egroupm ail/S=:HM/A=1853618/rand=784160919> To unsubscribe from this group, send an email to: goldenfin-unsubscribe@xxxxxxxxxxxxxxx Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service <http://docs.yahoo.com/info/terms/> .