Maintenance - Craftsman C950.672150 Operator's Manual

Check High Pressure Hose
High pressure hoses can develop leaks from wear, kinking,
or abuse. Inspect hose before each use. Check for cuts,
leaks, abrasions, bulging of cover, or damage or movement
of couplings. If any of these conditions exist, replace hose
immediately.
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 the filter on detergent tube (if equipped) and clean 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.
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
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.
Spray Tip 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 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.
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