Honda BF2A Owner's Manual page 27

3. Turn the fuel valve lever OFF.
/
FUEL VALVE LEVER
4. Close the fuel cap vent knob.
FUEL CAP VENT KNOB
In the event that the engine does not stop when you depressed the
engine stop switch, pull the emergency stop switch lanyard. If the engine
continues to run, pull the choke knob to stop the engine.
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