Shurflo water pump won't shut off..

Update - I found some info on what the two set screw adjustments are for. Still kind of confusing but I adjusted the switch set screw out a quarter turn and the pump stopped. Had my wife turn the water on and off several times while I watched the pump and it shut off every time. One is a switch adjustment and the other is pressure adjustment. What I read was these have to be set just right or the pump will not shut off. I'm sure I just got lucky but glad I didn't have to change it out again. Thanks everyone.