Karcher 670-M user manual

There can be several reasons why your Karcher 670-m pressure washer may have no pressure. Here are a few possible causes to consider:
1. Water supply: Ensure that the water supply to the pressure washer is turned on fully, and there is a sufficient flow of water. A weak water supply can result in reduced pressure.
2. Water filter/screen: Check the water filter or screen located where the water enters the pressure washer. Clean or replace it if it is clogged or dirty, as a blocked filter can restrict water flow and affect pressure.
3. Nozzle blockage: Inspect the nozzle on the pressure washer wand to ensure it is clean and not clogged with debris. Use a needle or something similar to clear any obstructions.
4. Hose kinks or blockages: Examine the high-pressure hose for any kinks, twists, or blockages that may restrict water flow. Straighten kinks and remove any blockages if present.
5. Pump issues: The pump in your pressure washer may be malfunctioning, resulting in no pressure. Check for any leaks, damaged seals, or worn-out parts. If necessary, consult the user manual or contact Karcher customer support for troubleshooting or repair options.
6. Air in the system: Sometimes, air can get trapped in the water supply lines, causing low or no pressure. Try priming the pressure washer by running water through it without engaging the trigger until a steady stream comes out.
If none of these solutions solve the problem, it might be best to contact Karcher's customer support for further assistance or take the pressure washer to an authorized service center for evaluation and repair.