Clean the sleeve and motor by part
Check what detaches and which pieces can get wet.
Separate removable pieces only as directed
A removable bullet can have different water limits from the wrap. Read both sets of instructions and avoid pulling apart a fixed motor housing.
Check material and lubricant compatibility
A TPE sleeve and a silicone sleeve may have different instructions. A sleeve does not replace a condom or other barrier.
Inspect the seams and connector
Dry parts as directed and check for tears, exposed contacts or a damaged battery cover. Replace damaged parts with compatible components.