Panasonic NP-B6M1FIGB Service Manual page 20

4. 4 screws for the upper rack.
5.8. Dismantling the internal feed
tube of the spray arms
1. Remove the spray arms.
2. wheel and ....
3. ... lift the plastic filter.
4. Extract the stainless steel filter.
5. Remove the screw which locks the tube.
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