John Deere SPRAYMASTER 4700 - Manual (Page 2)

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Operation
1. Check the water level in the rinse tank. Never operate the
Pressure Wash Pump without a water supply.
NOTE: Periodically check the Line Strainer and clean the Line
Strainer if it is necessary (See Figure 2).
2. Open the water supply valve.
CAUTION: Do not operate any other hydraulic functions on the
4700 while the Power Washer is in use.
3. Set the engine speed to 1,500 RPM.
4. Activate the Hydraulic Motor by placing the Lever on the
Hydraulic Control Valve in the DOWN position (See Figure 3).
5. Point the Spray Gun at the target area and squeeze the Spray
Gun Trigger (See Figure 4).
6. The standard Power Washer is equipped with an adjustable
cleaning angle nozzle. The cleaning angle may be varied
throughout its range by rotating the black outer body clockwise
(CW) or counterclockwise (CCW).
7. If your Power Washer is equipped with the optional Detergent
Injection System. The nozzle must be set in Low Pressure
Mode to activate the injector and draw soap. For rinsing, the
nozzle should be set in High pressure Mode. Pushing the black
nozzle body forward places the nozzle in the Low Pressure
Mode. Pulling the black nozzle body back places the nozzle in
the High Pressure Mode.
NOTE: When finished using the Power Washer, make sure the
Power Washer is shut off (Hydraulic Control Valve lever in the
UP position) before operating other hydraulic functions on the
4700 (See Figure 5).
8. Store all the Power Washer components in brackets provided
for their storage.
Pump Strainer
FIGURE 2
FIGURE 3
Hydraulic
Control
Valve
Lever
FIGURE 5
Hydraulic
Control
Valve
Lever
FIGURE 4
Troubleshooting
SYMPTOM PROBABLE CAUSE(S) CORRECTIVE ACTION
The pump runs but Pump is not primed. Open water supply valve and fill rinse tank.
produces no flow.
Pump fails to prime.
Air is trapped in pump. Squeeze and release trigger several times. If pump still does
not prime, disconnect the discharge hose and run until air is
evacuated, then reattach the discharge hose.
Low pressure at nozzle. Pump is partially primed. Repeat steps from above .
Air leak in suction hose or pump Make sure all the inlet fittings are tight and not leaking.
inlet fittings.
Partially clogged strainer.
Unscrew strainer bowl and clean screen.
Pump loses prime, Air leak in suction hose or pump Make sure all the inlet fittings are tight and not leaking.
pressure fluctuates, and/ inlet fittings.
or pump makes Partially clogged strainer. Unscrew strainer bowl and clean screen.
chattering noise.
Rapid cycling of pressure
Water leakage down stream from Check for leaks in discharge pressure hose, pipe fittings,
when gun trigger is unloader valve. gun wand, and nozzle assembly.
closed.
4700 Sprayer operation
Lever on Hydraulic Control Valve Shut Power Washer OFF by returning Control Lever up to the
is unusually slow. is in the DOWN position and OFF position
the Power Washer is running.
Hydraulic Motor Oil Backward plumbing of hydraulics. Verify proper plumbing of hydraulics to Motor; Motor Supply Hose to
Seal leaks. "PRESS" port and Return Hose to "TANK" port.
If the Power Washer is used and/or not maintained properly, it may be necessary to service the pump and/or
Unloader Valve. Refer to the proper Sections in this manual for servicing instructions.