4-1
4. Periodic Maintenance
Periodic maintenance is essential for top perfor-
mance and long genset life. Use Table 4-1 as a
guide for normal periodic maintenance.
Maintenance, replacement or repair of emission
control devices and systems may be performed by
any engine repair establishment or individual. How-
ever, warranty work must be completed by an au-
thorized Onan service representative.
WARNING
Accidental or remote starting can
cause severe personal injury or death. Discon-
nect the negative (−) cable at the battery to pre-
vent starting while working on the genset.
TABLE 4-1. PERIODIC MAINTENANCE SCHEDULE
MAINTENANCE FREQUENCY
MAINTENANCE OPERATION
After
First
50 Hrs
Every
Day /
8 Hrs
Every
Month/
100
Hrs
Every
Year/
200
Hrs
Every
Year/
350
Hrs
Every
Year/
500
Hrs
Every
800
Hrs
Every
2
Years
Every
5
Years/
2000
Hrs
Page
General Inspection
1
•
4-2
Check Engine Oil Level •
4-3
Drain Water from Fuel Filter •
4-6
Inspect Battery and Battery Connec-
tions
2
•
4-2
Check V-Belt Tension
3
•
4-13
Inspect Siphon Break •
4-8
Change Engine Oil and Oil Filter—
All except MDKBT &MDKBU
• •
4-3
Change Engine Oil and Oil Filter—
Only MDKBT &MDKBU
• •
4-3
Replace Fuel Filters •
4-6
Inspect Zinc Anode •
4-8
Replace Raw Water Impeller •
4-12
Adjust Engine Valve Lash
4
•
−
Replace Coolant, Pressure Cap &
Thermostat
•
4-7
Inspect Generator Bearing
4
•
−
1 − Includes inspection of Oil Level, Coolant Level, Fuel System, Exhaust System, Batteries and Battery Connections.
2 − See battery manufacturer’s recommendations.
3 − Check for slippage, cracking and wear.
4 − Must be performed by a qualified mechanic (authorized Onan dealer).
Redistribution or publication of this document,
by any means, is strictly prohibited.
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