Stopping The Engine - Honda WN20 Owner's Manual

OPERATION
STOPPING THE ENGINE
Move the throttle lever to the STOP position.
After use, remove the pump drain plug |(see page 40),| 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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