Isuzu Engine Break-In Requirements; John Deere Engine Break-In Requirements; Resetting The Maintenance Alarms - Generac Power Systems MAGNUM MMG25IF4 Operating Manual

1
Replace primary air cleaner when dust valve restriction indicator gauge shows a vacuum of 25 in. H
2
If not using John Deere Plus 50 II engine oil, the interval must be decreased to every 250 hours.

ISUZU ENGINE BREAK-IN REQUIREMENTS

Note: The EPA final Tier 4 Isuzu engines have an engine break-in duration that will prohibit the unit from providing
rated standby power upon factory delivery. The unit is tested at the factory and is initially capable of a prime standby
power output. The engine performance will increase to 95% of full rated power during the first 20 hours of loaded
operation. The unit will provide full rated power after the complete engine break-in period of 70 hours of loaded
operation.
Operate the engine at heavy loads (60-90% of rated output maximum) as much as possible during the break-in
period. If the engine has spent significant time at idle, constant speed(s) and/or light load or if makeup oil is required,
a longer break in period may be needed. Refer to the engine operator's manual for a full description of necessary
procedures on the addition of oil and extension of the break-in period. For more information on regular maintenance
intervals, see Basic Maintenance Schedule - Isuzu

JOHN DEERE ENGINE BREAK-IN REQUIREMENTS

Note: During the first 20 hours of operation, avoid long periods of no load or sustained maximum load operation. If
the generator is to run for longer than five minutes without a load, shut the generator down.
John Deere engines are supplied with engine break-in oil from the factory. Extra care during the first 100 hours of
engine operation will result in better performance and longer engine life. DO NOT exceed 100 hours of operation
with the break-in oil. Operate the engine at heavy loads (60-90% of maximum) as much as possible. If the engine
has spent significant time at idle, constant speed(s), and/or light load, or if makeup oil is required, a longer break in
period may be needed. Refer to the engine operator's manual for a full description of necessary procedures on the
addition of break-in oil and extension of the break-in period. For more information on regular maintenance intervals,
see Basic Maintenance Schedule - John Deere

RESETTING THE MAINTENANCE ALARMS

The Power Zone™ controller will display a warning message when the unit is due for maintenance or service. The
maintenance or service interval is set at 250, 500 and 3000 hours of engine running time. Once the unit has been
serviced, the appropriate maintenance alarm reminder needs to be reset. The following procedure demonstrates
how to reset the maintenance alarms:
1. With the unit shut down, move the Control Power switch to ON (I). After initialization, the controller will toggle
automatically to the Home screen.
Press ▲, ►, ▼, or ◄ to enter the maintenance screens.
2.
Press () and (O) simultaneously. The next screen will display the Configuration menu.
3.
Press  to move the cursor (blue highlighted text) down to the Maintenance group.
4.
Press ► to access the sections. Press  to highlight the Maintenance section.
5.
Press ► to access the parameters and highlight the maintenance alarm that needs to be reset.
6.
Press () to select the editable parameters. The cursor will highlight "Not Reset" under the selected mainte-
7.
nance alarm. Press  to highlight "Reset".
Press () to reset the selected maintenance alarm.
8.
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Engine.
Engine.
MMG25I-35D-45I-55DF4 Operating Manual
Maintenance
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