Troubleshooting - Generac Power Systems 4240 PRO GAS PW 49ST EPA III Owner's Manual

Troubleshooting

Problem
Pump fails to produce
pressure, has erratic pressure,
chattering, loss of pressure,
low water volume.
Detergent fails to mix with
spray.
Engine runs well at no-load,
but bogs down when load is
applied.
Engine will not start, or starts
and runs rough.
Engine shuts down during
operation.
Engine lacks power.
Owner's Manual for Power Washer
Cause
1. Low pressure nozzle
installed.
2. Water inlet is obstructed.
3. Inadequate water supply.
4. Inlet hose kinked or
leaking.
5. Clogged hose inlet screen.
6. Water supply is over 100ºF
(38 ºC).
7. High-pressure hose is
obstructed, or leaks.
8. Spray gun leaks.
9. Nozzle is obstructed.
10. Pump is faulty.
11. Dirty fuel filter.
1. Detergent siphoning tube is
not submerged.
2. Detergent siphoning tube/
filter is obstructed or
cracked.
3. High-pressure nozzle
installed.
1. Engine speed too low.
2. Dirty fuel filter.
1. Dirty air filter.
2. Out of fuel
3. Stale fuel.
4. Spark plug wire not
connected to plug.
5. Bad spark plug.
6. Water in fuel.
7. Excessively rich fuel
mixture.
8. Dirty fuel filter.
1. Out of fuel.
1. Dirty air filter.
Maintenance and Troubleshooting
Correction
1. Replace with high-pressure
nozzle.
2. Clean inlet.
3. Provide adequate water
flow.
4. Straighten inlet hose, patch
leak.
5. Inspect and clean inlet
hose screen.
6. Provide cooler water
supply.
7. Clear obstructions or
replace hose.
8. Replace spray gun.
9. Clean nozzle.
10. Contact IASD.
11. Replace fuel filter.
1. Insert detergent siphoning
tube into detergent.
2. Clean or replace filter/
detergent siphoning tube.
3. Install low-pressure nozzle.
1. Contact IASD.
2. Replace fuel filter.
1. Clean or replace air filter.
2. Fill fuel tank.
3. Replace with fresh fuel.
4. Connect wire to spark plug.
5. Replace spark plug.
6. Drain fuel tank, replace
with fresh fuel.
7. Contact IASD.
8. Replace fuel filter.
1. Fill fuel tank.
1. Replace air filter.
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