Craftsman 580.768341 Operator's Manual page 16

Problem Cause Correction
1. Nozzle in low pressure mode. 1. Pull nozzle backward for high
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.
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 140°F.
7. High pressure hose is blocked or
leaks.
8. Gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
1. Detergent siphoning tube is not
submerged.
2. Chemical filter is clogged.
3. Nozzle is in high pressure mode.
Engine speed is too slow.
1. Low oil level.
2. Dirty air cleaner.
3. Out of gasoline.
4. Stale gasoline.
5. Spark plug wire not connected to
pressure mode.
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 nozzle.
10. Contact Sears service facility.
1. Insert detergent siphoning tube
into detergent.
2. Clean or replace filter/detergent
siphoning tube.
3. Push nozzle forward for low
pressure mode.
Move throttle control to FAST
position. If engine still "bogs down",
contact Sears service facility.
1. Fill crankcase to proper level.
2. Clean or replace air cleaner.
3. Fill fuel tank.
4. Drain gas tank; fill with fresh
fuel.
5. Connect wire to spark plug.
spark plug.
6. Bad spark plug.
7. Water in gasoline.
8. Overchoking.
6. Replace spark plug.
7. Drain gas tank; fill with fresh
fuel.
8. Open choke fully and crank
engine.
9. Excessively rich fuel mixture.
10. Intake valve stuck open or
closed.
11. Engine has lost compression.
Engine shuts down during Out of gasoline.
operation.
Engine lacks power. Dirty air filter.
Engine "hunts" or falters. Choke is opened too soon.
9. Contact Sears service facility.
10. Contact Sears service facility.
11. Contact Sears service facility.
Fill fuel tank.
Replace air filter.
Move choke to halfway position until
engine runs smoothly.
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