Eco-Throttle System - Honda EU2000i Owner's Manual

OPERATION
ECO-THROTTLE™ SYSTEM
With the switch in the ON position, engine speed is automatically
lowered when loads are reduced, turned off, or disconnected. When
appliances are turned on or reconnected, the engine returns to the
proper speed to power the electrical load. In the OFF position, the 
Eco-Throttle system does not operate.
Appliances with large start-up power demands may not allow the
engine to reach normal operating rpm when they are connected to the
generator. Turn the Eco-Throttle switch to the OFF position and
connect the appliance to the generator. If the engine still will not reach
normal operating speed, check that the appliance does not exceed the
rated load capacity of the generator.
If high electrical loads are connected simultaneously, turn the 
Eco-Throttle switch to the OFF position to reduce voltage changes.
The Eco-Throttle system is not effective for use with appliances or
tools that require only momentary power. If the tool or appliance will
be turned ON and OFF quickly, the Eco-Throttle switch should be in the
OFF position.
When using the DC output, turn the Eco-Throttle switch to the OFF
position.
ECO-THROTTLE SWITCH
OFF
ON
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