how often do i actually need to wash the filters on my shark navigator lift-away? i keep forgetting.

Filter maintenance is critical for suction. Follow this schedule.

• Foam filter: Rinse monthly under lukewarm water. Air dry for 24 hours minimum.
• Felt filter: Rinse monthly under lukewarm water. Air dry for 24 hours minimum.
• Dust cup: Empty after every use or when it reaches the MAX fill line.

If you notice a loss of suction before the monthly mark, clean the filters immediately. Never reinstall damp filters. The vacuum will not operate correctly and you risk motor damage.