Specifications

CB SERIES PRESSURE WASHER OPERATOR’S MANUAL
9
Shark CB • Rev. 6/02
GENERAL WASHING
TECHNIQUES
Hold spray nozzle a foot or so from the surface being
cleaned. Spray at an angle to get under the material and
lift it off.
When washing large objects, use detergent injector to
apply detergent. Start washing from the bottom and work
up. Allow the detergent to set 5-10 minutes. After wash-
ing, rinse from the top down.
Cleaning heavy dirt or material away with a hard stream
of clear water is recommended before using a cleaning
agent.
MAINTENANCE
Pump Lubrication
The pump on your CB Pressure Washer is a triplex ce-
ramic plunger pump. As the plungers move back, water
flows through the inlet valve into the manifold chamber.
Then, when the plungers move forward, the inlet valves
close and the discharge valves open to produce discharge
pressure.
Use only SAE 30 weight non-detergent oil; change oil
after first 50 hours of use. Thereafter, change oil every
three months or at 500 hour intervals. Oil level should be
checked through the use of the dipstick found on top of
the pump, or half way up on the oil gauge window. Oil
should be maintained at that level.
Unloader Valves
The unloader valve is connected directly to the discharge
port of the pump. Its purpose is to allow recirculation
back into the pump inlet when the trigger on the spray
gun is closed.
Nozzles
Each machine is equipped with one spray nozzle depend-
ing on the flow and pressure of that particular model.
Spray nozzles vary in bore size and angle of spray. When
ordering replacement nozzles, please specify size and
angle of nozzle. Nozzle size for each machine is located
on the serial plate.
Winterizing Procedure
Damage due to freezing is not covered by warranty. Use
the following cold weather procedures whenever the
washer must be stored or operated outdoors under freez-
ing conditions.
During winter months, when the temperature drops below
32°F, protecting your machine against freezing is neces-
sary. A blowout valve is available which can be screwed
on in place of the garden hose to blow water out of the
system. When compressed air is not available or imprac-
tical, siphon a small amount of antifreeze into the ma-
chine and siphon a 50/50 mixture of antifreeze into the
pump. Run the pump dry for a few seconds and discon-
nect all hoses to allow water to drain.
Low Pressure Diagnosis
Refer to Troubleshooting Chart for low pressure. If, by
referring to the chart, the trouble is found to be either the
unloader or the pump, your next step is to determine
whether in fact the unloader or the pump is the problem.
This can be done by eliminating the unloader from the
system and attaching the discharge hose directly to the
pump. If high pressure is developed in this manner the
pump is good, and the unloader needs to be repaired or
replaced.
CAUTION: When using this procedure to test compo-
nents, keep the spray gun open at all times.