[average joe]

How would you replace the supply hose from the bottom of the dishwasher to the spray arm? Does the top pull out, unscrew. etc... Thanks

[PS Staff - Sheila]

The top spray arm unscrews from the supply hose.

There is a nut above the spray arm.

Turn the nut counter clock wise to unscrew it.

Here is a link to your dishwasher model dwu4912aab.