Craftsman 580.752440 Operator's Manual page 18

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 high pressure hose. Replace it.
• Replacement hose rating MUST equal or exceed
maximum pressure rating of unit.
Check Detergent Siphoning Tube
Examine detergent tube and clean if clogged. The
tube should fit tightly on the barbed fitting of fitting.
Examine the tube for leaks or tears. Replace the tube if
damaged.
Detergent Siphoning Check Ball
Occasionally check ball in detergent siphoning
system may become stuck from storage, dried soap,
or minerals in water. The check ball can be freed by
performing the following:
NOTICE Before performing this procedure, be sure
you are wearing safety goggles as described below.
WARNING Risk of eye injury.
Spray could splash back or propel objects
resulting in serious injury.
• Always wear indirect vented (chemical splash) safety
goggles marked to comply with ANSI Z87.1 when using
or in vicinity of this equipment.
• NEVER substitute safety glasses or dry-condition
goggles for indirect vented safety goggles.
1. Shut OFF engine and turn off water supply.
2. ALWAYS point spray gun in a safe direction,
press red button 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 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.
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