| 1.Is dry filter installed correctly? ☆Please make sure that the dry filter is installed properly |
| 2.Confirm whether there is dirt or debris in the channel or on the brush roller. ☆Please clean the brush roller and channel according to animation demonstration. |
| 3.Examine the scraper and see if there is dirt or debris on the scraper. Check if the scraper is deformed. ☆Clean debris & dirt in the scraper with cleaning tool. |
| 4.Confirm whether brush roller cover installed correctly? ☆Please install brush roller cover correctly. |
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