Shark UltraCylone CH951 U4 Has Low to No Suction

If your Shark UltraCylone CH951 U4 vacuum does not suction well or at all when it is fully charged, follow this page for solutions.

The Dust Cup collects all the debris sucked up through the Air Intake Nozzle or attachments. If the component becomes clogged or too full, the suction will not be able to make it to the Air Intake Nozzle.

1. Remove the Dust Cup by pressing the Dust Cup Release Button located near the bottom of the Dust Cup.
2. Empty container into a trash can by pressing the Dust Cup Opener button, located near the upper middle of the Dust Cup. Shake the Dust Cup to get all the debris out.
3. If the problem persists, remove the whole filter located at the bottom of the Dust Cup, plastic and filter cover included. Clean only Dust Cup in a sink with water and let dry thoroughly before attaching it to the body of the device again.
4. Reassemble by following the steps backwards.

The filter helps keep debris from getting into the motor, however, the filter can become covered by debris that stops suction.

1. To check if filter is placed correctly, remove Dust Cup by pressing the Dust Cup Release Button.
2. Locate filter at bottom of Dust Cup and ensure components are placed flat within compartment.

If problem persists, see this guide for cleaning and replacement.

If the Dust Cup is clean but the issue persists or a defect is noticeable, the Dust Cup needs replacement. See this guide.

To remove Dust Cup press the Dust Cup Release Button located near the bottom of the Dust Cup. Replacement parts can be found on the Shark Website.

Motors in this device can be faulty or defective. If the Dust Cup and filter are properly installed and cleaned but the suction remains weak or is not occurring, the motor may need to be replaced. Please reference this guide.

New motors can be found on eBay; the motor will be the Shark UltraCyclone CH951 Motor.