Troubleshooting - Craftsman C950.679621 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.

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. Nozzle is obstructed.
10. Pump is faulty.
1. Detergent shut-off valve is in the
"Off" position.
2. High pressure spray tip installed.
3. Check ball stuck in detergent
siphoning system.
Engine speed is too slow.
1. Dirty air cleaner.
2. Out of fuel.
3. Stale fuel.
4. Spark plug wire not connected to
spark plug.
5. Bad spark plug.
6. Water in fuel.
7. Excessively rich fuel mixture.
Dirty air filter.
24
Correction
1. Replace 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 high pressure hose or
replace hose.
8. Replace gun.
9. Clean nozzle.
10. Contact Sears service facility
1. Rotate detergent shut-off valve to "On"
position.
2. Replace with low pressure spray tip.
3. Unstick check ball as described in
Detergent Siphoning Check Ball.
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 fuel tank; fill with fresh fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain fuel tank; fill with fresh fuel.
7. Contact Sears service facility.
Replace air filter.