Specifications

4 Maintenance
4.1 Maintenance Schedule
WARNING: Contact with a hot generator set can cause severe burns. Always allow the
WARNING: Accidental starting of the generator set during maintenance can cause
Periodic maintenance is essential for top performance. Use the Table below as a guide. Under
hot or dusty operating conditions some maintenance operations should be performed more
frequently, as indicated by the footnotes in the table.
Keep a log of maintenance performed and the hours run. Recording maintenance will help you
keep it regular and provide a basis for supporting warranty claims.
generator set to cool before performing any maintenance or service.
severe personal injury or death. Before performing maintenance, disconnect
the spark plug wire from the spark plug. For electric start models, disconnect
both of the generator set starting battery cables. To reduce the risk of arcing,
remove the negative ( – ) cable first and reconnect it last.
TABLE 3. PERIODIC MAINTENANCE SCHEDULE
SERVICE INTERVAL
AFTER
EVERY 3 EVERY 6 EVERY
SERVICE THESE ITEMS
EACH FIRST EVERY
MONTHS / 50 MONTHS / YEAR / 300
USE MONTH / 20 MONTH
HOURS 100 HOURS HOURS
HOURS
General Inspection x
1
Check Oil Level x
Test GFCI x
Change Engine Oil x x
Clean Air Cleaner x
2
Clean Cylinder Cooling Fins x
2
Check Starting Battery (if x
equipped)
Clean Spark Plug x
Clean the Spark Arrestor x
Clean Fuel Sediment Cup x
3
Clean Fuel Tank x
3
Adjust Valve Clearance x
3
Check fuel line Every 2 years (Replace if necessary)
3
1
See "General Inspections."
2
Service more frequently when used in dusty envioronments.
3
These items must be performed by a trained and experienced mechanic (A list of authorized Cummins Onan
dealers is available at www.cumminsonan.com).
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