Honda EU10i Manual De Explicaciones página 41

3.Turn the fuel cap vent lever fully counterclockwise to the OFF
position.
CAUTION:
Be sure the fuel cap vent lever and the engine switch are in the OFF
position when stopping, transporting and/or storing the generator.
4.When parallel operation has been executed, pull the special cable for
parallel operation.
38
FUEL CAP VENT LEVER
SPECIAL CABLE FOR PARALLEL OPERATION
(SOLD SEPARATERY)
OFF
OFF