Vacuum intermittently loses suction or power when the extension tube is twisted or moved.

Safety first: Remove the battery before inspecting the tube and connections.

Steps to try:

• Visual inspection: Check the tube for cracks, splits, or dents.
• Check seals: Inspect the rubber seals at each end of the tube. Replace the tube if seals are damaged or missing.
• Clear blockage: Look through the tube and push out any debris with a long, smooth rod.
• Test without tube: Run the vacuum with a tool attached directly to the main body. If the issue disappears, replace the extension tube.