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MAINTENANCE
CLEANING/REPLACING THE AIR FILTER
See Figure 23.
A dirty air filter will cause starting difficulty, loss of perfor-
mance, and shorten the life span of the engine. Check the
air filter monthly. For best performance, replace the air filter
at least once a year.
The filter cover pivots up and lifts off.
Push the tab on the air filter cover to open, then remove
the air filter cover.
Using a damp cloth, wipe the air filter cover and inner
surface. Take care not to allow dust to enter the carburetor.
Remove the air filter.
Rinse filter with clean water.
Gently squeeze filter until excess water is removed.
Apply a light coat of engine lubricant to the filter, then
squeeze it out.
Reinstall the foam filter.
NOTE: Make sure the filter is seated properly inside the
compartment. Installing the filter incorrectly will allow dirt
to enter the engine, causing rapid engine wear.
Reinstall the filter cover.
CHANGING ENGINE LUBRICANT
See Figure 24.
Shut off the engine.
Clean the area around the oil fill cap/dipstick, then remove
the oil fill cap/dipstick.
Disconnect the spark plug wire from the engine.
To drain the lubricant, remove the drain plug from the bot-
tom of the engine. Drain lubricant into approved container.
NOTE: Remove the dipstick to allow lubricant to drain
easier and more quickly.
NOTE: Drain the lubricant while the engine is still warm
but not hot. Warm lubricant will drain quickly and more
completely.
WARNING:
Do not change engine lubricant while it is hot. Ac-
cidental contact with hot engine lubricant could
result in serious burns.
Replace the drain plug.
Fill with lubricant following the instructions in Adding/
Checking Engine Lubricant earlier in this manual. For
amount of lubricant needed to refill, see Product Specifi-
cations earlier in this manual or the accompanying engine
manual, if applicable.
Before using the pressure washer, check to ensure that
no lubricant is leaking from the engine.
NOTE: Used lubricant should be disposed of at an approved
disposal site. See your local oil retailer for more information.
CLEANING THE FUEL TANK INLET SCREEN
See Figure 25.
For best performance, clean the tank's inlet screen yearly or
after every 100 hours of use. If the screen is damaged, call
customer service to order a replacement screen.
Remove fuel tank inlet screen.
Flush with warm soapy water.
Rinse and re-install screen in tank filler neck.
NOTICE:
When reinstalling the fuel tank inlet screen, ensure
that it is properly seated in the tank filler neck so
that it does not interfere with the fuel cap. After
reinstalling the fuel tank inlet screen, reinstall the
fuel cap by turning it clockwise to a complete stop
to ensure that it is properly sealed.
NOTE: Dirty tank fuel filters will cause starting difficulty, loss
of performance, and shorten the life span of the engine. Con-
tact customer service or a qualified service center to check
and clean the tank outlet filter yearly. For best performance,
have the filter replaced after 200 hours of use.
CHANGING THE PUMP LUBRICANT
See Figure 26.
NOTE: The pump was filled with lubricant at the factory.
Fill the crankcase with special Cat Pumps lubricant per
pump specifications listed below. Do not run pump without
lubricant in crankcase. Change initial fill after 50 hours of
run time. Thereafter, change lubricant every 3 months or
500 hour intervals.
To check pump lubricant:
Place unit on a flat, level surface.
The sight glass is located above the drain plug. There is
a red dot in the center of the glass.
A lubricant level at the top of the red dot indicates lubri-
cant is at maximum level.
A lubricant level at or below the bottom of the red dot
indicates lubricant is below desired level, and lubricant
should be added.
To change pump lubricant:
Place a container under the pressure washer.
Loosen the pump oil cap. Remove the oil drain plug and
drain the old lubricant.
NOTE: Drain the lubricant while the pump is still warm
but not hot. Warm lubricant will drain quickly and more
completely.
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