16
POWER WASHER MAINTENANCE

Clean Debris

Daily or before use, clean accumulated debris from the cleaning
system. Keep the linkage, spring and controls clean. Keep the area
around and behind the muffler free from any combustible debris.
Inspect the cooling air slots and openings on the power washer.
These openings must be kept clean and unobstructed.
Power washer parts should be kept clean to reduce the risk of
overheating and ignition of accumulated debris.
• Use a damp cloth to wipe exterior sur faces clean.
NOTE:
Improper treatment of the power washer can damage it and
shorten its life.
• DO NOT inser t any objects through the cooling slots.
• Use a sof t bristle brush to loosen caked on dirt, oil, etc.
• Use a vacuum cleaner to pick up loose dir t and debris.
CHECK AND CLEAN INLET SCREEN
Examine the screen on the pump’s water inlet. Clean the screen if
it is clogged, or replace the screen if damaged.
CHECK HIGH PRESSURE HOSES
The high pressure hoses can develop leaks from wear, kinking, or
abuse. Inspect the hoses each time before using them. Check for
cuts, leaks, abrasions or bulging of cover, damage or movement
of couplings. If any of these conditions exist, replace the hose
immediately.
The high pressure stream of water that this equipment
produces can cut through skin and its underlying
tissues, leading to serious injury, possible amputation
or death. Spray gun traps high water pressure, even
when engine is stopped and water is disconnected,
which can cause injury.
• NEVER repair high pressure hose. Replace it.
• Replacement hose rating MUST meet or exceed maximum pressure
rating of unit.
CHECK DETERGENT SIPHONING TUBE
Examine the filter on the detergent tube and clean it if clogged. The
tube should fit tightly on the barbed fitting. Examine the tube for
leaks or tears. Replace the filter or tube if either is damaged.
CHECK SPRAY GUN
Examine the hose connection to the spray gun and make sure it
is secure. Test the trigger by pressing the trigger, it “springs back”
into place when you release it. Replace the spray gun immediately
if it fails to "spring back".
NOZZLE MAINTENANCE
A pulsing sensation felt while squeezing the spray gun trigger
may be caused by excessive pump pressure. The principal cause
of excessive pump pressure is a nozzle clogged or restricted
with foreign materials, such as dirt, etc. To correct the problem,
immediately clean the nozzle following these instructions:
1. Shut off the engine and turn off the water supply.
2. ALWAYS point the spray gun in a safe direction, squeeze the
spray gun trigger to release retained high water pressure.
The high pressure stream of water that this equipment
produces can cut through skin and its underlying
tissues, leading to serious injury, possible amputation
or death. Spray gun traps high water pressure, even
when engine is stopped and water is disconnected,
which can cause injury.
• Keep the high pressure hose connected to the pump and spray gun
while the system is pressurized.
• ALWAYS point the spray gun in a safe direction, and squeeze the
spray gun trigger to release high pressure every time you stop the
engine. Engage the trigger lock when not in use.
3. Remove the nozzle from the end of nozzle extension.
4. Use a small paper clip to free any foreign material clogging or
restricting the nozzle (Figure 31).
5. Remove the lance from the spray gun.

Figure 31 – Free Foreign Material

6. Using a garden hose, remove additional debris by back
flushing water through the lance (Figure 32) for 30 to 60
seconds.

Figure 32 – Back Flush Lance

Maintenance