Honda Power Products EU1oi Manuel De L'utilisateur page 41

3.Allow the engine to cool, and then turn the fuel filler cap vent lever to
the OFF position.
CAUTION:
Be sure the fuel filler cap vent lever and the engine switch are in the
OFF position when stopping, transporting and/or storing the generator.
4.If two generators were connected for parallel operation, disconnect
the parallel operation cable after stopping the engines if you do not
wish to resume parallel operation.
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FUEL FILLER CAP VENT LEVER
SPECIAL CABLE FOR PARALLEL OPERATION
OFF
OFF