Troubleshooting - Craftsman 580.752440 Operator'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; starts
and runs rough or shuts
down during operation.
Engine lacks power.
Engine "hunts" or falters.

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. Detergent siphoning tube is
clogged or cracked.
3. High pressure spray tip installed.
4. Detergent siphoning check ball
stuck.
Engine speed is too SLOW
1. Throttle lever in STOP
position.
2. Fuel valve in OFF (0) position.
3. Dirty air cleaner.
4. Out of fuel.
5. Stale fuel.
6. Spark plug wire not connected
to spark plug.
7. Bad spark plug.
8. Water in fuel.
9. Excessively rich fuel mixture.
Dirty air filter.
Choke is opened too soon.
23
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 detergent siphoning
tube.
3. Replace spray tip with low pressure
spray tip.
4. Free detergent siphoning check ball.
Move throttle control to FAST
.
position. If engine still "bogs
down", contact Sears service facility.
1. Move throttle lever to FAST
position.
2. Move fuel valve to ON (I) position.
3. Clean or replace air cleaner.
4. Fill fuel tank.
5. Drain fuel tank; fill with fresh fuel.
6. Connect wire to spark plug.
7. Replace spark plug.
8. Drain fuel tank; fill with fresh fuel.
9. Contact Sears service facility.
Replace air filter.
Move choke to halfway position until
engine runs smoothly.