How do I clean spray arm nozzles?
Remove spray arms from top and bottom racks to check them for obstructions, then flush under running water if blocked. For top rack: Remove locking nut counter-clockwise and remove spray arm.
From the official Bosch Super Silence Plus 42 Dba Dishwasher manual, page 16
Have a follow-up question?
Answers from the official manual.
Common questions