Q: How do you adjust the idle on a 2006 ultra classic & is there a special wrench needed?
I took off the air filter and back plate. I could see the throttle cable but it looked like it would take a special wrench to adjust……TT#???
A: Dan, we would recommend that you do not tamper with that screw. That is a “tamper proof” screw for good reason. Chances are that your bike is not idling correctly for other reasons. Although you CAN alter your idle with that screw, you will only be compensating for another problem. Most common causes of a bad or inconsistent idle on your bike are: intake leak – bad throttle position sensor (TPS) – bad idle air control sensor (IAC). Consider having your bike scanned for trouble codes. It can save you a lot of time and aggravation. Let us know how you make out.
Related Video: Idle Screw on Carbureted Models.