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Pump not running at 100%

My pressure is running at 60%, I'm thinking it has something to do with one of the o-rings inside the pump. Already remove the valve caps, but I'm having trouble trying to remove them as they don't want to move. I was thinking that if I disassembled the pump I could gently knock the valves out from the other direction. Problem now is I'm having trouble separating the two parts of the pump. Used a heat gun as I thought lock tight might have been used at the factory, but had no luck. Any suggestions would be great.

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  • Garden Master
  • 40,804 Answers

First we need to know the make and type of pump , what it is fitted in and the purpose it is used for to get any sort a relevent answer
post the details along with your original statement as posts are not linked

Posted on May 15, 2017

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6ya6ya
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Posted on Jan 02, 2017

  • 15 Answers

SOURCE: builds up to much pressure in hose and stalls engine

Sounds like the unloader is not working. try replacing it and see if that helps.

Posted on Apr 23, 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

  • 2 Answers

SOURCE: Karcher K 2400 HH Pressure Washer no pressure

http://www.landanorthwest.com/documents/instructional/spill_valve_instructions.pdf

Posted on Jun 05, 2009

  • 1 Answer

SOURCE: Karcher pistol gun has broken

Make sure you DO NOT have a check valve (this is what stops your hose running when you disconnect from the hozelock fitting) in your hose pipe system, This will send a shockwave through the pressure washer and destroy the fitting you mentioned. They can be easily removed.

Posted on Jul 25, 2009

  • 40 Answers

SOURCE: where is the unloader valve on my pressure washer

is not necessarily a cap, but could be a screw in plug, that should be close to the hose hook-up on the pump Inside there there should be a round ball and a spring that you can tighten or loosen to adjust the unloader and if it has been used ALOT, where the ball seats there could be grooves cut in there and you might need to get a valve kit to fix it

Posted on Sep 05, 2009

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