Troubleshooting - Craftsman 580.676660 Owner's Manual

Problem
Pump has following problems:
failure to produce pressure,
erratic pressure, chattering, loss
of pressure, low water volume.
Detergent fails to mix with spray.
Engine runs good at no-load but
"bogs" when load is added.
Engine will not start; or starts
and runs rough.
Engine shuts down during
operation.
Engine lacks power.

TROUBLESHOOTING

Cause
1. Low pressure spray tip installed.
2. Water inlet is blocked.
3. Inadequate water supply.
4. Inlet hose is kinked or leaking.
5. Clogged inlet hose strainer.
6. Water supply is over 100°F.
7. High pressure hose is blocked
or leaks.
8. Gun leaks.
9. Spray tip is obstructed.
10. Pump is faulty.
1. Detergent siphoning tube is not
submerged.
2. Chemical filter is clogged or
cracked.
3. Dirty in-line filter.
4. High pressure spray tip
installed.
Engine speed is too slow.
1. Dirty air cleaner.
2. Out of gasoline.
3. Stale gasoline.
4. Spark plug wire not connected
to spark plug.
5. Bad spark plug.
6. Water in gasoline.
7. Excessively rich fuel mixture.
8. Intake valve stuck open or
closed.
9. Engine has lost compression.
Out of gasoline.
Dirty air filter.
20
Correction
1. Replace spray tip with high
pressure spray tip.
2. Clear inlet.
3. Provide adequate water flow.
4. Straighten inlet hose, patch
leak.
5. Check and clean inlet hose
strainer.
6. Provide cooler water supply.
7. Clear blocks in outlet hose.
8. Replace gun.
9. Clean spray tip.
10. Contact Sears service facility.
1. Insert detergent siphoning tube
into detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. See "Check In-Line Filter".
4. Replace spray tip with low
pressure spray tip.
Move throttle control to FAST
position. If engine still "bogs down",
contact Sears service facility.
1. Clean or replace air cleaner.
2. Fill fuel tank.
3. Drain gas tank; fill with fresh
fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain gas tank; fill with fresh
fuel.
7. Contact Sears service facility.
8. Contact Sears service facility.
9. Contact Sears service facility.
Fill fuel tank.
Replace air filter.