Specifications

4 Maintenance
4.1 Periodic Maintenance Schedule
Periodic maintenance is essential for top generator set performance. Use the Maintenance
Frequency table as a guide for normal periodic maintenance.
· In hot and dusty environments some maintenance procedures should be performed more
frequently, as indicated by the footnotes in the table.
· Maintenance, replacement or repair of emission control devices and systems may be
performed by any engine repair establishment or individual.
· Warranty work MUST be completed by an authorized Cummins Onan dealer.
WARNING: Accidental or remote starting of the generator set can cause severe personal
injury or death. Before working on the generator set, move the switch (S2) to
the Stop position, disconnect the remote harness (P7) to disable the ATS
mounted charger and remove the negative (-) battery cable from the battery
to prevent starting.
TABLE 9. MAINTENANCE FREQUENCY
Maintenance Task Maintenance Frequency
First Startup Daily or Every Yearly or Every 250 Every 400
24 Hours Every 100 Hours Hours
Hours
Check Engine Oil Level X
2, 5
Change Engine Oil and Oil Filter After first 8 X
1
hours
Adjust Engine Valve Clearance After first 50 X
4
hours
4
Replace Engine Air Filter X
1
Clean and Check Starting X
Battery
Replace Spark Plugs and Wires X
3
Clean Engine Cooling Fins X
3
Complete System Test X
6
1. Perform more often when operating in dusty conditions.
2. Perform more often when operating in high temperature conditions.
3. Perform sooner if engine performance deteriorates.
4. Must be performed by a qualified mechanic (authorized Cummins Onan dealer).
5. Check daily during power outages, or monthly without power outages.
6. See automatic transfer switch manual for testing of load transfer.
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