Why is there no suction in my Shark UV420?
- JJason TaylorAug 1, 2025
If your Shark Vacuum Cleaner has restricted airflow and weak or no suction, several factors could be the cause. The filters may need cleaning; check them and follow the instructions for rinsing and drying before re-inserting. Also, the dust cup might be full, so empty it. Check the hose, hose connections, nozzles, and accessories for any blockages and clear them. In some cases, closing the suction release on the hose can increase suction power. If the dust cup is empty and the attachment inlets are clear, inspect for any other blockages.