Question about Karcher K2.26 Electric Power Washer

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My Karcher Power washer keeps cutting out and when it does come back on after about 10mins the motor is humming but no power & then gives spurts of full power before cutting out again?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

redbeard00
  • 957 Answers

SOURCE: How do you clean the unloader valve on a power washer pump?

The unloader valve usually is replaced. I dont know if you can get o-rings for it. But if you want to take it apart, there will be a crown or cap style nut just below the spring. Unscrew it completely and you will be able to remove the spool. There is just a series of o-rings on it.

Posted on May 12, 2009

  • 3 Answers

SOURCE: karcher k2400hh pressure washer, water pressure cuts out.

Hello cikanek:

Try this:

From your posting, I assume you have removed the splash cap and the nylon bypass valve cover. Connect the water supply to the pump and connect the high pressure hose and wand to the pump outlet. Wad up a small towel and place it over the bypass valve opening to catch the valve insert when it pops out. With the engine throttle closed, pull the starter cord several times to see it the valve insert will pop out. If it doesn't come out after two or three pulls, set the throttle to low and start the engine. I have performed this procedure a number of times and the valve insert always pops out. There is no real danger of the valve parts getting seriously airborn since the actual pump output volume is very low (2.5 Gal/min).

Good luck,
Ed

Posted on May 23, 2009

  • 1 Answer

SOURCE: Karcher Power Washer Problem

I had the same problem with my Karcher. The recall was lifted Aug. 0f 2007. Tried numerous people at Karcher....head of Customer Service, vice president, etc. No one returns telephone calls not even cutomer service....poor, very poor customer service. Thinking about calling Germany.

Posted on Jun 14, 2008

  • 250 Answers

SOURCE: The motor keeps surging

If there's a lot of sediment in your water supply, there's a chance that sediment has gummed up the pressure switches. I'm assuming it has a full power switch and high power switch. It runs on full power until a pressure switch is satisfied, and runs on low power to slowly build the pressure back up, at which a second switch is satisfied from the pressure and turns the motor off. These things are not easy to work on, and are made of metal probably too fragile to try any chemicals. You should probably contact the manufacturer.

Posted on Sep 19, 2009

Testimonial: "Thankyou, great help!"

  • 299 Answers

SOURCE: Karcher K2.36 motor cut out and won't restart

Yes, the water should be turned on first but if it only ran for a minute or two it should be OK. Most late model pressure washers have an automatic shutoff when the trigger on the wand is released. Turn on the water and then the machine and then squeeze the trigger on the handle of the wand and the motor should start as soon as the air is cleared from the line by the flowing water (about 10 seconds). If the unit was put away wet last season you may need to clean the nozzle with a piece of wire too.

Posted on Apr 16, 2010

Testimonial: "Thanks brobin, your advice was spot on and it is now working again, much appreciated"

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1 Answer

The motor will not start. Its hums for a second, than stops.


Dear Sir,
I came across a lot like this problem as an expierienced technician on power washers.
Most probably there is a capacitor, which when faulty, it gives this condition.
If you know with all respect to remove the pump from the electric motor, try starting without load.
It is possible that the problem is in the pump. If the electric motor finds that it cannot turn because the pump or pump pistons are jammed...it will hum and stops. I hope you did not do this very often...because you may have damaged the electric motor for good. Also important never put on a power washer without water supply. To test you can feed water but remove the gun...so that there is no load. Hope it is the capacitor in your case. Now the capacitor gets faulty from another fault. One of them is that when you were using the machine and closed the gun, the power washer stayed getting on and off all the time. This will damage the capacitor for sure. If you make a new capacitor ad machine starts and stops when gun closed....there is problem with control valve (Spill Valve). Hopefully the valves are OK. The spill valve you will locate inside...generally always you see wires coming out of it. Spill Valves are rarely serviced...myself I change with a new one. This what I am explaining is for nearly all models.....but I do not know your type of model....so I appologize if I am not explaining for your model. Well if you know how to open the cover...you can pin point what I said. Many Karcher covers are opened with screw drivers Torx T15.

Apr 19, 2011 | Karcher Garden

1 Answer

Powers up for a few seconds then cuts out and goes dead


Make sure your extension cord can provide 13 amps or greater of current. The longer the extension cord the more current it requires to supply the 13 amps to your power washer. If your unit has a long extension cord it could pull more than the typical 15 amps used for a household circuit breaker. If you do not have an adequate circuit breaker it will continue to trip. Plug the unit directly into the power receptacle or use a larger current rated power cord and power receptacle. If the problem persists then the unit could be pulling too much current due to motor restrictions.

Jul 26, 2010 | Alfred Karcher K 5.93 M Electric Pressure...

1 Answer

Karcher K2.36 Pressure Washer I've just fired up my Karcher for the first time since last year and the motor started running fine, I then switched on the tap to allow the water through and the motor cut...


The water must be switched on, and seen to be running freely from the nozzle for a few seconds before switching on the power - suggest you check the fuse in the plug, and then try the above.

Apr 17, 2010 | Karcher K2.26 Electric Power Washer

1 Answer

The motor keeps surging


If there's a lot of sediment in your water supply, there's a chance that sediment has gummed up the pressure switches. I'm assuming it has a full power switch and high power switch. It runs on full power until a pressure switch is satisfied, and runs on low power to slowly build the pressure back up, at which a second switch is satisfied from the pressure and turns the motor off. These things are not easy to work on, and are made of metal probably too fragile to try any chemicals. You should probably contact the manufacturer.

Sep 19, 2009 | Karcher 1750 psi Electric Pressure Washer

1 Answer

Karcher Power Washer that surges up and down with water pressure.


Before you start it up:
1. Disconnect the high pressure hose 2. Connect the water supply and turn on 3. Make sure water is flowing through the pump
Start the motor, run for about 10 seconds and then turn off.
Turn off the water supply, connect the high pressure hose, turn water back on, start the motor and away you go.

May 29, 2009 | Karcher 2500 PSI Pressure Washer

1 Answer

Karcher electric press. wash. Hums when turned on then trips bre


Dear K_mccurdy,
I am assuming that your washer is single phase. A comon reason for humming is a faulty capacitor. This must be changed by a new one.
Now one must see why the capacitor got damaged. This could happen, when the gun is closed the machine starts and goes off again in short intervals. In this case a control valve, often called the Spill Valve, needs lubrication or replacement. I prefer to replace it. Even if the pump has no faults and you have a habbit of closing and opening the gun more than necessary...the capacitor will get damaged. It is also important that if you use soap or chemicals, always rinse with fresh water before storing away the washer. Also never store the washer with pressure still built up. Always release the gun, before storing. Well in your case it must be the capacitor. If the capacitor is OK or you have changed it....try the washer without load. This can be done by removing the gun. You can leave the water supply, for this has a cooling effect during this test. Things should work fine now. If not...then the electric motor must be checked. But I repeat...the most common fault for humming is a faulty capacitor.
Regards,
Fulltech.

May 06, 2009 | Karcher PSI Electric Pressure Washer

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