7.2 Replacing the roller brush belt.
a. Find the side that looks di erent from the other roller brush belts, and
pull down the silicone buckles that are stuck in the fixed slot.
b. After all the silicone buckles are pulled out, replace the roller brush
belt with a new one. Align the silicone buckles with the fixed slot and
pull them outward. They can be fixed after passing through the slot.
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