Troubleshooting - Kärcher K 3.86 M Operator's Manual

CAUTION
Symptom
Motor will not start
Unit does not reach high
pressure.
Output pressure varies
high and low.

TROUBLESHOOTING

Cause
On/Off switch is in the "OFF" (O)
position.
Power cord is not plugged in.
Extension cord is too long.
Extension cord is not proper gauge.
Extension cord is damaged.
Electrical outlet does not supply
adequate power.
Tripped circuit breaker.
Diameter of garden hose is too
small.
Water supply is restricted.
Not enough inlet water supply.
Water inlet filter is clogged.
Spray wand is in low pressure posi-
tion.
Not enough inlet water supply.
Pump is sucking air.
Water inlet filter is clogged.
Discharge nozzle is obstructed.
Calcified gun, hose or spray wand.
Disconnect the machine from the power
source before making any repair.
Solution
Turn switch to the "ON" (I) position
Plug in power cord.
Replace extension cord with either
a 25 ft. 12/3 gauge cord or a 50 ft.
10/3 gauge cord.
Try a different outlet.
Switch off pressure washer. The re-
set will be automatically, for that
wait that the temperature goes
down.
Replace with a 5/8 inch garden ho-
se.
Check garden hose for kinks, leaks
and blockage.
Open water source full force.
Remove filter and rinse out in warm
water.
Turn spray wand to high pressure
position.
Turn water on full force. Check gar-
den hose for kinks, leaks or blocka-
ge.
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.
Remove filter and rinse out in warm
water.
Blow out or remove debris with a
fine needle.
Run distilled vinegar through deter-
gent suction tube.
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English