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20 John Deere Operator's Manual
MAINTENANCE CHART
PROCEDURE DAILY 3 MONTHS 6 MONTHS 9 MONTHS 12 MONTHS
Check engine oil level X
Change engine oil***** X X X X
Check water pump oil level X
Change water pump oil ** X X X X
Oil leak inspection X
Fuel leak inspection X
Water leak inspection X
Hose inspection X
Water inlet lter inspection X
Check fuel lter/water separator X
Inspect belt X X X X
Replace high pressure nozzle*** X X X X
Replace fuel lter/water separator X
Inspect fuel pump lter* X
Replace fuel nozzle* X
Check burner air adjustment X X X X
Check burner electrodes* X
Test water pressure* X X X X
Test fuel pressure* X X X X
Test water temperature* X X X X
Descale coil**** X
* Must be performed by an authorized service technician.
** The pump oil must be changed after the rst 50 hours of operation and every 250 hours or 3 months, whichever
comes rst.
*** High pressure nozzle should be replaced whenever pressure is less than 85%.
**** Scale build-up will vary with mineral content in the water and amount of usage. Descaling can range from monthly
to yearly maintenance.
***** The engine oil must be changed after the rst 8 hours of operation and every 50 hours or 3 months,
whichever comes rst.