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24 John Deere Operator's Manual
MAINTENANCE CHART
PROCEDURE DAILY 3 MONTHS 6 MONTHS 9 MONTHS 12 MONTHS
Inspect electrical cord X
Test GFCI X
Test voltage and amp draw 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 filter inspection X
Check fuel filter/water separator X
Inspect belt X X X X
Replace high pressure nozzle*** X X X X
Replace fuel filter/water separator X
Inspect fuel pump filter* 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 first 50 hours of operation and every 250 hours or 3 months, whichever
comes first.
*** 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 weekly
to yearly maintenance.