Powermate PM0558023.01 - Manual (Page 9)

The Idle Control circuit is designed to extend engine life
and improve fuel usage by slowing the engine down to
approximately 2700 RPM in a “No Load” condition. The noise is
also greatly reduced during this condition.
When power is required from the generator an electronic
control module automatically senses current flow in the
electrical outlet and allows the engine to return to full speed or
standard operating condition. Likewise, when the load is
removed, the generator will automatically return to the idle
condition after a 4-5 second delay.
A convenient switch is mounted in the control panel for
easy access and will disable the Idle Control circuitry when in
the off position.
9 English
IDLE CONTROL OPERATION
BASIC WIRING DIAGRAM (Electric Start Models)