I have a Sears Ultra Dishwasher that just stopped spraying on the wash cycle. Everything seems to work except there's no water spraying through the arms when the wash cycle is active. There is water in the bottom and the drain cycle works fine, too. Does this have an obvious answer? Thanks for any help! :-)

The most obvious answer would be the little holes in the spray arm are clogged and need to be unclogged using a toothpick. Then see if it works okay. If it is not the holes clogged up, then it's your motor.