Troubleshooting (Models: Hd 5/30 G, Hd 6/30 G, Hd 8/35 G, Hd 3.4/30 D ) - Kärcher 1.107-370.0 Manuel D'installation Et D'entretien

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For Models: HD 5/30 G, HD 6/30 G, HD 8/35 G, HD 3.4/30 D
PROBLEM
LOW OPERATING
PRESSURE
FLUCTUATING
PRESSURE
PRESSURE LOW
AFTER PERIOD OF
NORMAL USE
ENGINE WILL NOT
START OR STOPS
WHILE OPERATING
TROUBLESHOOTING
POSSIBLE CAUSE
Faulty pressure gauge
Insufficient water supply. Closed
faucet. Inlet hose kinked
Clogged inlet hose strainer
Old, worn or incorrect spray nozzle
Belt slippage
Plumbing or hose leak
Faulty or mis-adjusted unloader
valve
Worn packing in pump
Fouled or dirty inlet or discharge
valves in pump
Machine has been stored in
freezing temperatures
Worn inlet or discharge valves
Obstruction in spray nozzle
Leaking pressure control valve
Slow engine RPM
Pump sucking air
Valves sticking
Unloader valve seat faulty
Worn or dirty pump valves
Nozzle is obstructed
Pump sucking air, inlet hose
leaking
Insufficient water supply
Nozzle worn
Unloader valve worn
Low oil shutdown
Out of gas
Water in gasoline
• 9.808-130.0 • Rev. 10/19
SOLUTION
Install new gauge.
Use larger supply hose; clean filter at water
inlet. Open faucet.
Check plumbing system for leaks. Retape
leaks with teflon tape.
Match nozzle number to machine and/or
replace with new nozzle.
Tighten or replace; use correct belt.
Check plumbing system for leaks. Re-tape
leaks with teflon tape.
Adjust unloader for proper pressure. Install
repair kit when needed.
Install new packing kit. Call Dealer Customer
Support.
Clean inlet and discharge valves.
Thaw out machine completely, including
hose, spray gun and wand.
Replace with valve kit.
Remove obstruction.
Rebuild or replace as needed.
Set engine speed at proper specifications.
Check water supply and possibility of air
seepage.
Check and clean or replace if necessary.
Check and replace if necessary.
Call local distributor.
Blow out or remove debris with fine needle.
Check that all hoses and fittings are airtight.
Turn off machine and trigger spray gun until
a steady flow of water emerges through the
nozzle.
Turn water on full force. Check garden hose
for kinks, leaks or blockage.
Replace nozzle.
Replace unloader valve.
Fill engine with oil.
Fill fuel tank.
Drain gas tank; fill with clean fuel.
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