Honda WX15 Manuel De L'utilisateur page 27

3.Turn the fuel valve lever to the OFF position.
OFF
FUEL VALVE LEVER
After use, remove the pump drain plug (see page 33), and drain the
pump chamber. Remove the filler cap, and flush the pump chamber
with clean, fresh water. Allow the water to drain from the pump
chamber, then reinstall the filler cap and drain plug.
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