Honda EXT12D Maintenance Manual page 56

Starter button (with glow lamp)
When a problem with the generator occurs or the generator is
overloaded, the warning lamp of the generator lights and the engine
stops. The glow lamp of starter button on the remote control box light,
too, simultaneously.
Stop the engine immediately and disconnect the appliance, and
determine whether the problem is due to an generator problem, or
generator overloading.
If the warning lamp lights and engine stops:
1. Turn off the AC circuit protector OFF.
2. Check the fuel level. If the fuel is at the proper level, bring your
generator to an authorized Honda dealer to have it checked.
PILOT LAMP
Stopping the engine
To stop the engine in an emergency, turn the engine switch OFF.
In normal use.
1. Turn off the electrical appliance's switch.
2. Turn off the AC circuit protector.
3. Turn off the engine switch.
ENGINE SWITCH
4. Open the maintenance lid and turn the fuel valve to OFF.
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STARTER BUTTON
OFF