Karcher HD 4-0-40 PB Cage - Manual (Page 14)

8.913-996.0 • 8.914-452.0 • 9.807-624.0 • 8.919-013.0 • Rev. 11/13
PRESSURE
W
ASHER
T
roub
leshooting Guide
12
TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
ENGINE OPERATES
FOR 15 MIN. THEN
STOPS Not enough gas or engine oil Fill tank with gas. Check oil level.
Vapor lock developed by heat of
day Keep gas tank full to avoid vapor locking.
Obstruction in fuel fi lter Clean or replace fuel fi lter.
ENGINE LACKS
POWER Dirty air fi lter Replace air fi lter.
ENGINE FALTERS Choke is opened too soon Move choke to halfway position until engine
runs smoothly.
WATER DRIPPING
FROM
UNDER PUMP Piston packing worn Contact local dealer.
O-Ring plunger retainer worn Contact local dealer.
Cracked piston Contact local dealer.
OIL DRIPPING Oil seal worn or damaged Contact local dealer.
WATER LEAKING
FROM PUMP PROTEC-
TOR Spray gun closed with machine
running 5 minutes or longer Open spray gun or turn off machine.
Excess water supply pressure Place a pressure regulator at end of 50'
garden hose.
NO DETERGENT Detergent suction tube not prop-
erly connected to machine Check connection.
Detergent is too thick Dilute detergent. For best results, use our
detergent.
Detergent fi lter valve is at lowest
setting Set detergent fi lter valve to a higher setting.
Filter on detergent suction tube is
clogged Run warm water through fi lter to remove
debris.
Damaged or clogged detergent
suction tube Remove obstruction or replace detergent
suction tube.
A high pressure nozzle is at-
tached. Replace with black detergent nozzle.
Discharge nozzle is obstructed Blow out or remove debris with fi ne needle
GARDEN HOSE
CONNECTION LEAKS Loose fi ttings Tighten fi ttings.
Missing/worn rubber washer Insert new washer.
SPRAY WAND LEAKS Spray wand not properly attached Slide the spray wand into the gun. Turn the
wand collar clockwise onto the spray gun
threads until tight.
Broken o-ring Contact local dealer to order an o-ring.
PUMP IS NOISY Pump is sucking air Check that hoses and fi ttings are air tight.
Turn off machine and purge pump by
squeezing trigger gun until a steady fl ow of
water emerges through nozzle.