Generac Power Systems Pro 6712 Operator's Manual page 15

Figure 4-1.Test Spray Gun (typical)
Nozzle Maintenance
A pulsing sensation felt when squeezing spray
gun trigger may be caused by excessive
pump pressure. Typical causes of excessive
pump pressure are nozzle clog or restriction.
Immediately clean nozzle as follows:
WARNING
Fluid Injection. This machine produces
high-pressure fluid streams that can pierce
skin. Fluid injection could result in death or
serious injury.
1. Turn engine and water supply OFF.
NOTE: Keep high-pressure hose connected
to pump and spray gun while system is
pressurized.
2. Relieve spray gun water pressure.
3. Remove nozzle from lance.
4. See Figure 4-2. Use a paper clip to remove
debris.
5. See Figure 4-3. Remove lance from spray
gun and back flush thoroughly.
6. Install nozzle on lance.
7. Install lance on spray gun.
Figure 4-2.Remove Debris
Figure 4-3.Back Flush Lance
Owner's Manual for Power Washer
8. Verify hose is connected to pump water
inlet, and high-pressure hose is connected
to spray gun and pump.
9. Turn water ON.
10. Start engine.
11. Test power washer by operating with each
quick connect nozzle.
Change Pump Oil
1. Clean area around oil drain plug
000123
1).
2. Place a small pan under oil drain plug to
catch oil.
3. Remove
completely.
4. Install oil drain plug. Do not over tighten.
5. Clean area around pump oil dipstick.
6. Fill pump with SAE 15W40 non-detergent
oil. Oil level must be within markings on
dipstick
7. Install oil dipstick until finger tight.
8. Clean up any spilled oil.
(000106b)
Belt Replacement
000109
It may be necessary to replace belt if it breaks
or if there is a sudden loss of pressure:
1. Remove belt guard
2. See
tensioning bolt (B).
000131
Maintenance and Troubleshooting
oil drain plug.
(Figure 2-5). Do not overfill.
Figure 4-4.Drain Pump Oil
Figure 4-5.Pump Oil Dipstick
Figure 4-6. Loosen nuts (A) and
(Figure 2-
Drain oil
000275
000268
13