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26 Operator’s Manual
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SPECIFIC MAINTENANCE
PUMP:
The pump oil must be changed after the first 25 hours of operation.
Once the initial oil change has been completed, it is recommended the
oil be changed every 3 months or 250 hour intervals. If oil appears
dirty or milky, changes may be required at a greater frequency. Use
John Deere Hy-Guard and fill only to the center of the oil sight glass. DO NOT
OVERFILL!
NOZZLES:
Water flow through the spray nozzle will erode the orifice, making it larger,
resulting in a pressure loss. Nozzles should be replaced whenever pressure
is less than 85% of the maximum. The frequency of replacement will depend
upon such variables as mineral content in the water and number of hours the
nozzle is used.
QUICK COUPLERS:
There is an o-ring seal inside the female quick coupler. This o-ring will deteriorate
or, if the unit is allowed to pump without the high pressure hose or nozzle
attached, the o-ring may be blown out occasionally. Simply insert a replacement
o-ring to correct the leak. (Additional o-rings can be purchased from your John
Deere dealer.)