Question about Karcher 1750 psi Electric Pressure Washer

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I have a Karcher KB5050 it started to pulse when the trigger stopped

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Is there water leaking from the bottom ? If so, then you have a leak in the pump. Bad seal or crack in the Pump.
If under 1 year old and have a receipt, Call Karcher for a warranty replacement.

Posted on Jul 13, 2010

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I fixed mine works good easy too watch my video step by step i put it on youtube

http://www.youtube.com/watch?v=8XDPDhg_acQ&list=UUiF9Qw4CmLuBqWFGanj1KIA&index=14&feature=plcp

Posted on Aug 25, 2012

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1 Answer

My Karcher 530M runs ok until I release the trigger, then it will not start again unless I switch and allow the water to run through for about 15 secs before switching on again


Hi Cliff:
My experience is that the pump pressures prevent the engine from starting, so we hold the trigger while starting.
My brother has cut a wedge of wood that he uses to jam the trigger open to bypass the problem. It can get a bit wild if the wand is not secured when the unit is started..

Aug 10, 2016 | Karcher Garden

1 Answer

How do i stop it from pulsing?


Getting to much air to carb probably.

Jul 11, 2015 | Karcher Garden

2 Answers

My washer makes a loud pulsing noise when not being used,as soon as I pull the trigger it works fine.


sounds like your unit has a bypass problem either needs adjustment or replaced

Oct 14, 2012 | Karcher Garden

1 Answer

Karcher KB4040 pulsing when trigger closed and has lost about 50% of its power


Just google " stripping down Karcher KB4040" A YOU TUBE CLIP will show you hiw to fix it and what tools you need

Jun 05, 2012 | Garden

1 Answer

After sitting for several weeks, I plugged my electric 1500 PSI unit and nothing happened. Usually there is a pulse in the motor and it waits for the trigger to flow water to reinitialize the pump. ...


this Karcher unit have a termal overload in the motor but your problem can be cause by a pressure switch the shutt on and off the motor when you stop spraying.

Aug 15, 2010 | Karcher K2.26 Electric Power Washer

1 Answer

Karcher pressure washer hunts ~ off/on ~ when running. How do I fix?


HI Your machine wil start and stop if you have any external leaks when the machine is running at not pressing the trigger. Please start the machine and not pull the trigger and look form leaks. A common one is around the high pressure hose outlet and also the trigger.

Jun 11, 2010 | Karcher 1750 psi Electric Pressure Washer

2 Answers

My Karcher 2.99 starts and stops, (pulses) when th...


Is liquid leaking from the base, when the Pressure washer is on ?
I have the same Problem, the leak is from the seam of the Manifold housing. There is a small crack in the seam. A manufacturing defect.. A New Manifold Complete Replacement is $61.03, about the half the price what I paid for this pressure washer at Walmart... :( If under 1 year old, and you can find a receipt,Karcher will replace the whole Pressure washer under warranty.

May 21, 2010 | Karcher K2.26MR Electric Pressure Washer

2 Answers

My Karcher pulses when on standby,stops when i use the trigger,but it also seems to have lost pressure.Is less than 6 months old but have lost receipt!


Is there a leak from the bottom ?
If so Problem, the leak is from the seam of the Manifold housing. There is a small crack in the seam. A design weakness.. A New Manifold Complete Replacement approx. $61.03.
If not you may replace the Pump Manifold Housing from Karcher, or locate a local Karcher Service Center.
If under 1 year old, and you can find a receipt,Karcher will replace the entire Pressure Washer under warranty.

May 03, 2010 | Karcher K 5.85 M Electric Pressure Washer

2 Answers

POWER CRAFT BY Karcher bought Aldi on 31Mar 05.2100Watts 130 bar.


You did winterize the machine? Leaving water in a powerwasher will freeze and damage the pump. It's a common happening, because people don't think of it or are not told by the maker.

Apr 29, 2010 | Karcher K2.26 Electric Power Washer

2 Answers

The motor is pulsing on and off without the trigger being pressed


It is probably sucking air on one of the connections or around one of the fittings at the regulator. You can also turn the pressure up allittle on the regulator, that might stop it also. Make sure the clamps on the hoses going to the regulator is tite. Also it could be that the regulator is just bypassing water and if it has air in it it will pulsate.

Mar 14, 2009 | Karcher K2.26 Electric Power Washer

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