Bosch
Uneven Brush Contact / Contaminated Nozzle
Carpet cleaner leaves streaks or dirty lines on carpet after passes
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Possible Causes
Worn or uneven brush bristles, Clogged suction slot, Warped nozzle plate, Incorrect brush height setting
How to Fix / Troubleshooting
Safety first: Unplug the unit before inspecting the cleaning head.
- 1. Inspect brush roll
- Check for flattened or missing bristles.
- Replace the brush roll if bristles are worn unevenly.
- 2. Clean suction slot and nozzle
- Remove any lint or debris from the suction slot.
- Wipe the nozzle plate to ensure smooth contact with the carpet.
- 3. Adjust height (if available)
- Set the cleaning head height appropriate for your carpet type.
- Too high or too low can cause streaking.
- 4. Slow down cleaning passes
- Move the cleaner more slowly to allow proper agitation and extraction.
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Repair Difficulty
Very Easy
1/5
Required Part
Brush Roll Assembly
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