6
storage & maintenance
ENGINE:
The engine instructions that accompany your unit detail specific
procedures for maintenance of the engine. Following the engine
manufacturer's recommendations will extend engine work life.
PUMP:
The pump oil must be changed after the first 25 hours of operation
on all units excluding the WP-2000. (The WP-2000 has a sealed
crankcase and the oil cannot be changed.) 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. Add pump oil and
fill only to the center of the sight glass (Refer to the parts listing for
the correct pump oil). 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
dealer.)
WP-Cold Water Direct Driven Operator's Manual