Hoshizaki HW-320B Service Manual page 18

7) Unscrew the two screws that connect the rinse pump to the
basement.Then remove the rinse pump.
4.c. Removal of the back panel.
1) Remove the top panel
2) Unscrew the 8 screws that is at the back of the Dishwasher.
3 ) Pull back panel up and through to you and remove.
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