TROUBLESHOOTING
Disconnect the machine from the power source before making any repair.
Symptom
Cause
Solution
Motor will not start
On/Off switch is in the “OFF” (O)
position.
Turn switch to the “ON” (I) position
Power cord is not plugged in.
Plug in power cord.
Extension cord is too long.
Extension cord is not proper gauge.
Extension cord is damaged.
Replace extension cord with either
a 25 ft. 12/3 gauge cord or a 50
ft. 10/3 gauge cord.
Electrical outlet does not supply
adequate power.
Try a different outlet.
Unit does not reach high
pressure
Diameter of garden hose is too
small.
Replace with a 1/2 inch or 5/8
inch garden hose.
Water supply is restricted.
Check garden hose for kinks,
leaks and blockage.
Not enough inlet water supply.
Water inlet filter is clogged.
Open water source full force.
11
Remove filter and rinse out in
warm water.
Quattro nozzle is in low pressure
position.
Turn quattro nozzle to high
pressure position.
Output pressure varies
high and low
Not enough inlet water supply.
Turn water on full force. Check
garden hose for kinks, leaks or
blockage.
Pump is sucking air.
Check that hoses and fittings are
air tight. Turn off machine and
purge pump by squeezing trigger
gun until a steady flow of water
emerges through the nozzle.
Water inlet filter is clogged.
Remove filter and rinse out in
warm water.
Discharge nozzle is obstructed.
Calcified gun, hose or spray wand.
Blow out or remove debris with a
fine needle.
Run distilled vinegar through
detergent tank.
| Categories | Kärcher Pressure Washer Manuals, Pressure Washer Manuals |
|---|---|
| Tags | Kärcher K 3.97 M |
| Download File |
|
| Language | English, Français, Español |
| Product Brand | Kärcher. Kärcher US Home and garden support phone: 1-800-537-4129 Kärcher international support: http://www.karcher.com/start/choose_your_language.htm, Pressure Washer |
| Document File Type | |
| Publisher | karcherresidential.com |
| Wikipedia's Page | Kärcher |
| Copyright | Attribution Non-commercial |
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