FI adjustment

I took my injectors out of my mondi and cleaned them up and changed my feul filter as instructed on the board and the backfiring through the aircleaner and even the popping on decelleration disappeared....thanks guys a wonderful result, I am not embarassed driving my car now!

The car runs well but the idle sits at about 1500 rpm so I will check the mixture tomorrow with an analyser as someone might have richened the mixture previously to get around the lean burning injector. It might just be that I tightened the throttle cable up one turn too many....

What should the mixture be running at and where is the adjustment for the mixture? The manual says CO mixture and has an arrow pointing generally towards the feul distributor and a note saying it is suitably covered to stop adjustment? I was looking for a thread on adjusting FI but have had no luck in finding one.

Cheers Frank