Craftsman 113.177571 Owner's Manual page 11

WARNING
SERVICING OF DOUBLE-INSULATED WET/DRY VAC
In a double-insulated Wet/Dry Vac, two systems of insulation are provided instead
of grounding. No grounding means is provided on a double-insulated appliance,
nor should a means for grounding be added. Servicing a double-insulated Wet/
Dry Vac requires extreme care and knowledge of the system, and should be done
only by qualified service personnel. Replacement parts for a double-insulated
Wet/Dry Vac must be identical to the parts they replace. Your double-insulated
Wet/Dry Vac is marked with the words "DOUBLE INSULATED" and the symbol
-_'-](square within a square) may also be marked on the appliances.
Repair Parts
3-GALLON PORTABLE WET/DRY VAC
Model Number 113.177571
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21
24
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11