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Maintenance Intervals
  Miles
Kilometers		Hours Months
Oil and Filter 15,000 mi
24,000 km 		500 6
Primary Fuel Filter 15,000 mi
24,000 km 		500 6
Secondary Fuel Filter 30,000 mi
48,000 km 		1,000 12
Coolant Filter None* None* None*
Overhead Adjustment 150,000 mi
241,500 km 		5,000 48
Coalescing Filter 60,000
96000 km		2,00024
Particulate Filter Cleaning**200,000-400,000 mi (320,000-640,000 km)

*If engine is equipped with an optional coolant filter, it will need to be replaced on the same intervals as the oil filter.
**Intervals using CJ-4 oil

See owner's manual for specific requirements.
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