Honda EB10000 Owner's Manual page 52

SERVICING YOUR GENERATOR
4. Clean the sediment cup in non-flammable or high flash point solvent.
5. Reinstall a new O-ring and the sediment cup.
6. Turn the fuel valve to the ON position and check for leaks.
50
FUEL VALVE LEVER
SEDIMENT CUP
OFF
O-RING (Replace)