Thanks for the thoughts guys...yes the 10mm nut is loose and it moves easily...the cable attachment is also working fine, the "hand lever" is as far to the left as can go..
I am stumped...this new engine is acting exactly like the last...turning the idle screw CCW does not change anything.
Extremely frustrating to be so close yet so far.
I must be doing something wrong as I can not understand the same problem with two different engines.
The stock throttle rod was hooked up to the black "BLACK butterfly shaft" and another peice under the gas tank. When I installed the new throttle rod the peice under the gas now has no connection. You can move that peice back and forth but I do not know what it does.
Is something supposed to be hooked up to it?
I followed the AGK throttle kit steps 2,3, and 4 in the following link provided by 1992suburban below...
http://www.affordablegokarts.com/throttle-linkage.php