This is not a routine adjustment. In general, the only reason for making this adjustment is to try to get more performance out of the engine than Saab intended it to deliver. Monkeying with this adjustment raises a serious potential for running the engine too lean and doing damage to it. Details for doing the job correctly are provided at Townsend's Web site.
Click on the photo below for a larger view. To increase boost, the rod is shortened (end of rod is screwed toward the actuator). To decrease boost, the rod is lengthened (end of rod is screwed toward the wastegate arm). In order to adjust the rod, first the locknut must be removed, then the rod must be removed from the wastegate pivot pin. It may be possible to loosen the locknut with a single 10mm open end wrench. However, if it's rusted tight, it's a good idea to hold the end of the rod with a pair of Vice Grips. Once the nut is loosened, remove the retaining clip from the pivot pin using a small flat screwdriver or a knife. Careful, as the clip likes to sproing off into never-never land. (If the adjustment has never been made before, there will be an anti-tamper wire and seal. Clip the wire off to allow the retaining clip to be removed). When the clip is off, slide the rod off the pivot pin. The rod can now be shortened or lengthened. If adjusting for performance (as with an aftermarket ECU or chip set), the rod will probably be too short to slip onto the pivot pin. In this case, it's OK to pull the rod to extend the actuator diaphragm until the rod can be slipped onto the pin. Remember to tighten the locknut and re-install the retaining clip. And remember, that clip does like to sproing off into never-never land. Replacements can be bought at the hardware store. You can wrap wire around the end of the pivot pin as a temporary retainer.
Click on the photo for a larger, annotated view.
