Craftsman 580.754990 Operator's Manual page 18

3. Remove detergent siphoning hose from barbed
fitting on pump.
4. Using a firm, blunt object 7/64" in diameter or
smaller, by at least 1" long, such as an Allen
wrench, slowly insert the object into the barbed
fitting until you meet resistance. This resistance is
the check ball.
5. Slowly push down until you feel the ball move
slightly, push no more than 1/8". Slight pressure
may be required to free the ball.
6. Repeat steps 4 and 5 if necessary.
7. Reinstall detergent siphoning hose onto barb
fitting.
8. Treat with PumpSaver as described in Protecting
the Pump during storage to prevent reoccurrence.
Check Spray Gun and Nozzle Extension
Examine hose connection to spray gun and make sure
it is secure. Test trigger by pressing it and making sure
it springs back into place when you release it. Do not
depress red button and test trigger. You should not be
able to press trigger. Replace spray gun immediately if
it fails any of these tests.
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
spray tip clogged or restricted with foreign materials,
such as dirt, etc. To correct the problem, immediately
clean the spray tip following these instructions:
1. Shut OFF engine and turn off water supply.
2. ALWAYS point spray gun in a safe direction, press
red button and and squeeze spray gun trigger to
release retained high water pressure.
WARNING The high pressure stream of water
that this equipment produces could cut
through skin and its underlying tissues,
resulting in serious injury and possible
amputation.
Spray gun traps high water pressure, even when
engine is stopped and water is disconnected, which
could result in serious injury.
• Keep high pressure hose connected to pump and spray
gun while system is pressurized.
• ALWAYS point spray gun in safe direction, press red
button and squeeze spray gun trigger to release high
pressure, every time you stop engine.
3. Remove spray tip from end of nozzle extension.
4. Use a small paper clip to free any foreign material
clogging or restricting spray tip (A).
A
5. Remove nozzle extension from spray gun.
6. Using a garden hose, remove additional debris by
back flushing water through nozzle extension. Back
flush between 30 to 60 seconds.
7. Reinstall spray tip into nozzle extension.
8. Reconnect nozzle extension to spray gun.
9. Make sure garden hose is connected to water inlet.
Check that high pressure hose is connected to
spray gun and pump. Turn on water.
10. Start engine following instructions How to Start
Your Pressure Washer.
11. Test pressure washer by operating with each quick
connect spray tip.
O–Ring Maintenance
Purchase an O–Ring Repair Kit, item 75116, at your local
Sears or by calling 1-888-331-4569 or online at www.
sears.com. It is not included with the pressure washer.
This kit includes replacement o-rings and a water inlet
filter. Refer to the instruction sheet provided in the kit to
service your unit's o-rings.
WARNING The high pressure stream of water
that this equipment produces could cut
through skin and its underlying tissues,
resulting in serious injury and possible
amputation.
• NEVER repair leaking connections with sealant of any
kind. Replace o-ring or seal.
Pump Maintenance
Changing Pump Oil
Change oil after first 50 hours of operation and then
every 200 hours or 3 months, whichever occurs first.
NOTICE When changing pump oil, use only high quality
nondetergent 30 weight oil. Use no special additives.
NOTICE Pump oil is available as an optional
accessory. It is not included with the pressure washer.
Pump oil, item 75127 is available at your local Sears or
by calling 1-888-331-4569 or online at www.sears.com.
Change pump oil as follows:
1. Clean area around brass oil drain plug at bottom of
pump.
2. Remove oil drain plug. Drain oil completely into an
approved container.
3. When oil has completely drained, install oil drain
plug and tighten firmly.
4. Clean area around pump oil dipstick. Remove
dipstick and fill pump with recommended oil to
FULL mark on dipstick (typically 0.35L or 12 oz.).
5. Install pump oil dipstick.
6. Wipe up any spilled oil.
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