Karcher G 2500 PH Operator's Manual - Troubleshooting
12
Please remove the spark plug cable to
prevent accidental ignition of the engine
before making any repair.
Engine will not start.
• No gasoline.
- Fill gas tank.
• Choke is not in correct position.
- Slide choke lever out to closed
position.
• Pressure built up in the high pressure
washer.
- Squeeze the trigger to release the
pressure.
For additional engine problems refer
to the engine owners manual.
Unit does not reach high pressure.
• Diameter of garden hose is too small.
- Replace with a 3/4 inch garden hose.
• Water supply is restricted.
- Check garden hose for kinks, leaks
and blockage.
• Not enough inlet water supply.
- Open water source full force.
• Water inlet filter is clogged.
- Remove filter and rinse out in warm
water.
• Black detergent nozzle is attached.
- Remove black detergent nozzle and
attach a high pressure nozzle.
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.
• Spray nozzle is obstructed.
- Blow out or remove debris with a fine
needle.
• Calcified gun, hose or spray wand.
- Run distilled vinegar through
detergent suction tube.
No detergent.
• Detergent suction tube not properly
connected to the machine.
- Check connection.
• Detergent is too thick.
- Dilute detergent. For best results, use
Kärcher detergent.
• Filter on detergent suction tube is
clogged.
- Run warm water through filter to
remove debris.
• Damaged or clogged detergent
suction tube.
- Remove obstruction or replace
detergent suction tube.
• A high pressure nozzle is attached.
- Replace with black detergent nozzle.
• Spray nozzle is obstructed.
- Blow out or remove debris with fine
needle.