Use and Care Manual
Not for 
Reproduction
 19
Operation
Important Owner’s Considerations
Engine Oil
The engine is shipped from the factory pre-run and filled 
with synthetic oil (API SJ/CF 5W-30). This allows for system 
operation in a wide range of temperature and climate 
conditions. Before starting the engine, check oil level and 
ensure that engine is serviced as described in Maintenance.
Battery
The installer must supply a rechargeable 12 volt DC starting 
battery. See Battery in Final Installation Considerations in the 
installation manual. 
With the battery installed, all wiring to transfer switch and 
generator completed, utility power supplied to the automatic 
transfer switch, and the unit in AUTO mode, the battery 
receives a trickle charge while the engine is not running. The 
trickle charge cannot be used to recharge a battery that is 
completely discharged.
15 Amp Fuse
The generator’s 15 Amp fuse is critical to correct system 
operation. The 15 Amp fuse was removed at the factory to 
prevent the unit from starting during shipping. Your installer 
will ensure the fuse is properly installed upon completion of 
the installation.
Automatic Operation Sequence
The generator’s control board constantly monitors utility 
voltage. Should utility voltage drop below a preset level, the 
control board will signal the engine to crank and start.
When utility voltage is restored above a preset voltage level, 
the engine is signaled to shut down.
The actual system operation is not adjustable and is 
sequenced by sensors and timers on the control board, 
as follows:
Utility Voltage Dropout Sensor
  •  This sensor monitors utility source voltage.
  •  If utility source voltage drops below about 70 percent 
of the nominal supply voltage, the sensor energizes 
a 3 second timer. The timer is used to ‘sense’ 
brown-outs.
  •  Once the timer has expired, the engine will crank 
and start.
Utility Voltage Pickup Sensor
This sensor monitors utility power voltage. When utility 
voltage is restored above 80 percent of the nominal source 
voltage, a time delay starts timing and the engine will go to 
engine cool-down.
Engine Cool-down Timer
When utility power is sensed and the load transfers to the 
utility source, the engine will go into a cool down period as 
described below:
  •  If the generator has run for MORE than 5 minutes, once 
the utility transfer occurs, the engine will continue to 
run for about 1 minute before shutting down.
  •  If the generator has run for LESS than 5 minutes, once 
the utility transfer occurs, the engine will continue to 
run until 5 minutes has elapsed before shutting down.
 CAUTION With the system switch set to AUTO, the 
engine could crank and start at any time without 
warning, resulting in minor or moderate injury.
•  To prevent possible injury that may be caused by such 
sudden starts, always set the system switch to OFF if 
performing maintenance on the system.
•  Remove the 15 Amp fuse before working on or around 
the generator or transfer switch.
NOTICE Any attempt to crank or start the engine before it 
has been properly serviced with the recommended oil will 
result in equipment failure.
•  DO NOT attempt to crank or start the engine before it has 
been properly serviced with the recommended oil. This 
may result in an engine failure.
•  Damage to equipment resulting from failure to follow this 
instruction will void generator warranty.
 WARNING Battery posts, terminals and related 
accessories contain lead and lead compounds, chemicals 
known to the State of California to cause cancer and 
reproductive harm. Wash hands after handling.










