Working on fine tuning my '88 300SE after a complete fuel system rebuild. The question I have involves the TPI pot. on the fuel distrubitor.



When looking at the feedback pot from the front of the car, on the drivers side of the pot, there is a very small bress screw head poking out.



What does that little screw adjust?


I have the pot adjusted so that with the key on, engine off, I get 0.8 vdc between terminals 1 & 2 of the pot.. Watching the videos from our Russian friend, the target is 0.7 VDC +/- 0.1 vdc. Is that small screw for fine tuning?