Karcher high-pressure power washers can be either gas powered or electric. Each model of Karcher pressure washers connects to a household garden hose for a water supply and has a reservoir for detergent additives. For the pressure washer to work effectively, there must be a suitable amount of water pressure and a reliable power source. Various situations can lead to issues that prevent the power washer from performing. Troubleshooting these issues will help identify the root of the problem and provide a solution in most cases.
- Skill level:
- Moderately Easy
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Check the connected garden hose for kinks, clogs or leaks. Straighten any kinks and clear any blockage. Replace the hose if leaks are present.
Open the water source tap completely to allow maximum water pressure.
Check the filter for clogs or blockage. Remove the filter. Rinse the filter in warm tap water.
Inspect the discharge nozzle for blockage. Blow out or remove any obstructions with a small wire or needle.
Check the gun, hose and spray wand for calcification in the form of white build-up. Run distilled vinegar through the detergent suction tube to remove calcification deposits.
Inspect the unit for any water leaks. Make sure all fittings are tightly secured.
If the motor will not start, make sure the unit is plugged into a working socket if it is an electric model. Try a different outlet if needed. If plugged into a GFCI outlet, press the reset button.
If the motor will not start on a gas-powered model, check the gas tank. Make sure the tank is full. If not, fill it with fresh gasoline.
If the detergent is not feeding through, check the detergent suction tube filter. Remove the filter. Run warm tap water through the filter to remove clogs or debris.
If oil leaks are occurring, the oil seals are worn. Contact Karcher customer support for assistance.
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