Break-In
The first 20 hours of operation is considered the
NOTICE
Failure to follow the
Adjusting Pressure
DO NOT attempt to increase the maximum pump pressure by modifying controls or otherwise altering the machine. A higher pressure setting than the factory set maximum pressure may damage the pump or cause components to fail, resulting in serious personal injury.
The pressure setting on the Model H8191 was preset at the factory to achieve optimum pressure for general purpose cleaning.
To adjust the pressure:
•BACK AWAY FROM THE SURFACE TO BE CLEANED. Moving further away reduces the pressure on the workpiece.
•SELECT A DIFFERENT NOZZLE. Nozzles with a wider angled spray deliver a less powerful stream.
•ADJUST THE PRESSURE REGULATOR ON THE PUMP. Turn the water pressure adjustment knob counterclockwise to lower the pressure (Figure 8). Once you have finished using your pressure washer, return the regulator to its original position by turning it clockwise.
Water Pressure
Adjustment Knob
Figure 8. Water pressure adjustment knob.
•REDUCE ENGINE SPEED. Slowing the engine will reduce the pressure created by the pump.
NOTICE
Engine speed should always be set high enough to handle the load of the pump. If the engine speed is too low, the motor may bog or stop when the spray gun trigger is pulled and the pump is activated. Operating the engine speed at such a setting can cause excessive engine wear and premature engine failure.
Changing Nozzles
The Model H8191 pressure washer is equipped with five spray nozzles housed in receptacles on the front panel. Each nozzle is color coded and delivers a specific spray pattern for a particular cleaning purpose. The 0°, 15°, 25°, and 40° nozzles are high pressure nozzles; the chemical nozzle is a low pressure nozzle.
H8191 3600 PSI Diesel Pressure Washer |
