My adjustment scews are out of wack can you tell me how to adjust them

Hildi, check out this site:

http://www.hubbell-icd.com/icd/pressure/files/4269ES.pdf

I've never fooled with this brand of switch, but the documentation basically says this: There are two nuts. One seems to be rather large and the other is right next to it and seems a little smaller. The smaller one only adjusts cut off pressure. Turn it CW to increase, and CCW to decrease. The larger one adjusts both cut in and cut off at the same time. Again, CW to increase, and CCW to decrease.