... Troubleshooting a Karcher Electric Pressure Washer ... Take the filter off of the Karcher and clean it. Troubleshooting. eBay; Business, Office & Industrial Supplies ... Karcher Pressure Washer K2 On And Off Switch Genuine Parts. The consensus of opinion seems to be that the problem lies in internal cracks. Category: Articles, News & … There seems to be a problem completing the request at present. But if your Karcher pressure washer isn’t working as it should, these expert tips should help you to fix the most common problems. Troubleshooting steps are useful for eliminating frequently occurring problems before you call for professional repair. I have found several complaints on-line by people who say their Karcher pressure washer pulses and leaks when the trigger is off. 13 watching. I have carefully stripped it down and other than the motor being knackered, I can only assume it is the capacitor or on / off switch. How to Diagnose Pressure Washer Electrical Problems. £3.60 postage. Karcher is a German cleaning company that specialises in both industrial and domestic pressure washers. I have a K2 Karcher pressure washer I've added a video, although its not my model it shows what happens, I think there is also is also a leak somewhere. ... Karcher K2 Switch and Capacitor 6.630-637 6.630-676 6.630-768. ... Karcher pressure washer problems – pulsating and leaking while trigger is off; here we have a karcher k4 ecologic hose in excellent used condition. What are the terms and conditions of my product ? Karcher Power Washer Problems. The problem can also be caused by debris in the water inlet filter, trigger gun or nozzles. Ask a Mechanic Now. £3.95. if you still need further support, please send us an e-mail to info@ultimatewasher.com with your Karcher model number and the part that you need. A broken down appliance is a common problem, and an annoying one. Karcher K2 Switch and Capacitor 6.630-637 6.630-67 . Power cord is not plugged in. Try cleaning out these items and see if this fixes the issue. Symptom Cause Motor will not start On/Off switch is in the “OFF” (0) position. … Look carefully at all the mechanisms inside the electrical box - as you may have a pent or broken arm which will not allow the switch to engage. Karcher K2 Pressure Washer - pulsing problem. Why does the light on my Window Vac switch flash? You can order spares from many places online. A broken down appliance is a common problem, and an annoying one. The green pilot light on the on / off switch is illuminated when connected to the mains, so I assume there is power to the unit.