How long should you run a karcher washer to prevent damage

The test / reset buttons are for a Ground Fault Interrupter built into the cord / washer. This device will help prevent deadly electric shock in the event of a malfunction - it is the same technology used in "GFI" electrical outlets located in bathrooms, outdoors, basements, etc.

You should have this serviced - or replaced before using.

Good luck!

Another name for bypass or unloader valve. This is a safety device for your pump head for when the pressure gets too great or water temp too hot they are pre set to dump water and prevent damage to the internal valves and seals hope this helps!

Brad

this sounds like the seals may have been damaged inside the pump or that the water inlet/outlet could be damaged. If you take off the front cover (use a star bit screw driver) then run the pressure washer you will be able to see were it is leaking from and then you can get the right part to replace it.

Normally when you dry run a machine you damage the pump so it would probably need changing. The motor might be Ok but for you to fix it you will need to take it to a Karcher dealer/service center.

From experiance it sometimes can be more cost efficient to purchase a new Karcher machine and get the 12 month warranty than spending money on an older machine.

This can happen if the head of the pressure pump has split. You may need a new head, and to stop this happening again, tie the rigger open with a zippy tie. The water will run all time now and automatically bleed any air form the system. When you want pressure, turn it on at the main switch. This will prevent hydraulic hammer, (when you pull the rigge)r, which is what causes the head to split.

I've found the most useful repair people for power washers are lawn mower repair techs. Give them a ring and see if they do house calls, they'll be your best bet.

Could be a pump, but most likely the unloader valve is stuck open. After replacing/repairing the valve, do the following to prevent it in the future: after finishing using it, unhook both hoses and pull the start cord on the engine several times to empty the water from the pump and valves. This is especially necessary when using hard water.

Most Honda engines have an oil pressure switch that prevents engine damage due to low/no oil pressure. Make sure there is sufficient oil in the engine and that the wire is connected to the pressure switch.

Your posting is incomplete, so I'm not quite sure what we're dealing with here.  I understand the machine and the high-pressure hose are Karcher - right?  Is the gun also a Karcher part?  If all are Karcher parts, they should fit unless the screw threads have been damaged.  If they are not all Karcher parts, they will not fit because Karcher connectors are different from almost all others.
Please post again if this doesn't help, giving as much detail as possible, and I'll see what else I can offer.

try taking the pump apart and cleaning it prob got a clogged port