How does the top spray arm come off?
Answer Hello Pat. You will need to twist and unscrew the large nut 912680 above the upper arm to remove the spray arm 903079. Hope this helps.
How does lower Spray come off as it is clogged but rest of washer is okay ?
Answer Hold the spray arm still with one hand and use your other hand to unscrew the nozzle coming out of the spray arm. Once the nozzle is removed the spray arm will lift off.