There are tools to do this. However, you can take a wide rubber band and put it on the head of the screw. Then, use a bit that will fit the groove of the one-way screw. The rubber should help you remove the screw, since it increases your grip on it.
Do not adjust idle screw, that is set in the factory and shouldn't need to be adjusted. Fix the problem that is causing rough idle or whatever idle problems you...
An old-school trick is to use wood glue and toothpicks to fill the hole. Now, you can get a strong wood epoxy or use threaded inserts. You can also buy...
Slowly start adjusting the screw out while, at the same time, opening your door so that the door shuts all the way without you pulling it in. If the door...
It screws on and off just like a pipe coupling or a nut on a bolt. Right-hand thread is an industry standard; left-hand thread is very rarely encountered.