Filter
Top Products
Operating Instructions and Parts Manual
Troubleshooting Chart - Gasoline Powered Pressure Washers Only
Symptom Possible Cause(s) Corrective Action
Engine will not start or
is hard to start
1. No gasoline in fuel tank or
carburetor
2. Low oil
3. Start/Stop switch in stop position
4. Water in gasoline or old fuel
5. Dirty air cleaner filter
6. Spark plug dirty, wrong gap or
wrong type
7. Spray gun closed
8. Other causes
1. Fill the tank with gasoline,open fuel shut off valve.
Check fuel line and carburetor
2. Check oil level. Fill if necessary
3. Move switch to start position
4.Drainfueltankandcarburetor.Usenewfuelanddry
spark plug
5. Remove and clean or replace
6. Clean, adjust the gap, or replace
7. Trigger spray gun
8. See engine owner’s manual
Engine misses or lacks
power
1. Partially plugged air cleaner filter
2. Spark plug dirty, wrong gap or
wrong type
1. Remove and clean or replace
2. Clean, adjust the gap, or replace
Low pressure and/or
pump runs rough
1. Worn or wrong size tip
2. Inlet filter on pump clogged
3. Worn water seals, abrasives in
water, or natural wear
4. Fouled or dirty inlet or discharge
valves
5. Restricted inlet
6. Worn inlet or discharge valves
7. Leaking high pressure hose
8. Pump drawing in air
9.Unloadervalveseatfaultyorworn
1. Replace with tip of proper size
2. Clean. Check more frequently
3. Check filter. Replace water seals. See service center
4. Clean inlet and discharge valve assemblies. Check
filter
5. Check garden hose, may be collapsed or kinked.
Check inlet water flow
6. Replace worn valves
7. Replace high pressure hose
8. Ensure hoses and fittings are tight
9. Check and replace
Water leakage from
under pump manifold
Worn water seals Install new water seals. See service center
Water in pump
crankcase (milky oil)
1. Humid air condensing inside
crankcase
2. Oil seals leaking
1. Change oil as specified in maintenance schedule
2. Install new oil seals. See service center
Frequent or premature
failure of the pump
water seals
1. Scored damaged or worn plungers
2. Abrasive material in the fluid
3. Inlet water temperature too high
4. Overpressurizing pump
5.Excessivepressureduetopartially
plugged or damaged tip
6. Pump running too long without
spraying
7. Pump running dry
1. Install new plungers. See service center
2. Install proper filtration on pump inlet plumbing
3.Checkwatertemperature;maynotexceed100oF.
4. Do not modify any factory set adjustments.
5. Clean or replace tip.
6. Never run pump more than 2 minutes without
spraying
7. Do not run pump without water
Strong surging at the
inlet and low pressure
Foreign particles in the inlet or
discharge valve or worn inlet and/or
discharge valves
Clean or replace valves. See service center
Oil leakage between the
engine and the pump
Worn oil seals and/or o-ring Replace oil seals and/or o-ring. See service center
Fluctuating pressure 1. Valve worn, dirty or stuck
2. Pump drawing in air
3. Tip clogged
1. Check and replace
2. Ensure hoses and fittings are tight. Purge air from
garden hose
3. Check or replace
Pressure drops after
period of normal use
1. Worn pump water seals
2. Nozzle worn
3. Valve worn, dirty or stuck
4.Unloadervalveseatwornordirty
5. Nozzle in low psi position
1. Check and replace
2. Check and replace
3. Check, clean or replace
4. Check, clean or replace
5. Pull back nozzle to high pressure position
www.chpower.com
14