Vacuum produces a high-pitched whistling noise and suction seems reduced

Safety first: Remove the battery before inspecting seals and covers.

• Check bin and covers: Ensure the dust bin and filter covers are fully latched and seated.
• Inspect seals: Look for flattened or torn rubber seals around the bin, filter, and motor housing. Replace as needed.
• Check wand/hose: Examine the wand and any flexible hose for cracks or holes. Replace damaged parts.
• Listen for leaks: With the vacuum running (battery installed), move your hand around joints and seals to feel for escaping air, then address the leak source.