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My karcher cleaner does not get the full pressure at nozzle

When I turn the nozzle handle to get the maximum pressure from the nozzle to clean I am only getting around half the pressure I use to.When I twist the handle from soft spray to high the machine the steam coming out goes out to the normal width and if I try to turn it more it seems to get smaller and distorted and not the wide spray.and also loses pressure
my machine is a karcher electric model 350 I think

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 883 Answers

SOURCE: Karcher HD 655 S Does not come up to full pressure

yes...check the check valve. A one-way directional valve, this part is also known as a DUMP valve. It opens when too much pressure builds in the hand wand (when not spraying water) in order to protect the pump, by returning the high pressure to its source reservoir. I suspect the DUMP valve is stuck in open condition (or nearly open).

Posted on Jun 10, 2007

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clyde2j2
  • 137 Answers

SOURCE: on my karcher pressure washer, how do i get the

Two nozzels came with your washer one has a cone shaped head, the other one is blunt, attach the blunt one to the trigger. You will notice on the barrel of the nozzel it says "mix" turn the indicator line to "mix" and it should work. This is a very low pressure setting and is used to "apply" the soap only. You cannot despense soap in the hight pressure mode.

Posted on Apr 13, 2009

  • 92 Answers

SOURCE: Karcher 2600 (Honda engine) has lost pressure.

Dear Modad,
First one must see if the problem is in the Honda engine or in the pump. So you must try the Honda with no load. You can remove the gun from the pump, but leave the water supply going into the pump. In this way you still have some cooling effect from the water. Now with no load you try the Honda engine. If it is possible tune and set the Honda engine to work correctly. Now if the Honda runs smoothly,...then the problem is in the pump. Regarding the pump try the system by attaching the gun with no NOZZLE/ or LANCE. Open and close the gun to see reaction of Honda Engine. If in this case the Honda runs OK....then attach a NOZZLE so that you have pressure and load. If the Honda starts to die down, this could be that the Honda needs servicing. This like having a car and uphill it will stall and dies down. Here the engine needs servicing. One small thing to look for. I came across Honda driven pumps which have a cable coming from the Honda's carbureter to the head of the pump. When the gun is released the cable is pulled from the head of the pump by means of a piston type valve and this in turn will reduce the speed of the Honda. As you see it is difficult for me to pinpoint the real cause when I do not know the model number and type of pump you have. But if you go by these guide lines you shuld find the fault. Remember...ALWAYS try HONDA ENGINE without load first. I also wish to add that the Honda could be working OK...but then the pump has some problem that it is stopping the Honda. So the pump could also for some reason be jammed and this needs the pump to be serviced. Another hint is very simple. If the Honda is not getting to its maximum power and revs...then the pump will drop pressure.
I gave you various hints to tackle the problem by simple elimination. But you must be able to know how to service the Honda or Pump yourself. To repeat and remind you...check the honda and service the Honda with NO LOAD!! Thyen tackle the PUMP.
Regards,
Fulltech.

Posted on May 24, 2009

  • 72 Answers

SOURCE: Cant change the high pressure hose on a Karcher

On the Kärcher, you have a bayonet mount at the base of the tip end of the pistol grip. This is where you attach different types of nozzles and gadgets after having removed the existing sprayer tube. Just push in and turn a quarter of a turn, then you pull it off the pistol grip. The hose is possible to remove from the machine as well, an ordinary threaded mount but since you need the pistol grip to regulate on/off this is probably not what you want to do. If the telescopic wand is made by Kärcher it should be very easy to snap it into place just like when you removed the sprayer tube/nozzle. If the attachment was made to fit Alto washers there is an inexpensive adapter that works very well. Good luck!

Posted on Jun 03, 2009

  • 174 Answers

SOURCE: motor starts and stops

Diagram here
It could be the Overpressure valve is leaking #20
It could be one of the small valves is not sealing #14 and #15
The soap valve could be not sealing #7
I have also seen micro cracks in the cylinder head #8
Good Luck

Posted on Jul 20, 2009

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