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K'A'RCHER 455 (1.747-609 AUS) pressure washer; relief-valve stuck

K'A'RCHER 455 (1.747-609 AUS) pressure washer; I've dismantled the water inlet/outlet section no trouble but how do I find the pressure-relief valve?, it's stuck open.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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david04928
  • 102 Answers

SOURCE: north star petrol pressure washer.

Sounds like the regulator is sticking or is airbound. loosen the water connection and then tighten it back. Could also be that the trigger gun is faulty or needs adjustment. Hope this helped

Posted on Mar 15, 2009

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  • 11 Answers

SOURCE: karcher k2 power washer inlet-outlet manifold cracked along weld

well depends did u use it in cold tempatures if so no it was u. if not then most likely or could have been just a crazzy thought here that there was a electrical discharge when it was pluged in and cracked the block on it but honestly thats 1/10000000000000 chance of happening. or it overheated and cracked it but relistically if its new then just take it back and play dumb or if its still under warrenty play dumb and get it fixed. aslo u can search for a new part on craigslist or ebay. last but not least if its not uner warrenty or new to take back or u cant find a part either thru the ones i listed or by calling the man. ur last resort is to just throw it away.

Posted on Apr 03, 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

  • 174 Answers

SOURCE: poor pressure

i had this same problem on my pressure washer.the pump had some broken parts in it .i found my replacement pump on EBay.

Posted on May 31, 2009

woobie dog
  • 1273 Answers

SOURCE: 2-yr old troy-bilt pressure washer with honda

It sounds like an air lock. Try this: With the machine off, connect the hose to the washer and let it run for several minutes to get all of the air out of the hose, and to purge any air out of the pump. Shut off the water, and connect the high pressure hose, but not the gun. Let the water run for several minutes. stretch out the HP hose and make sure that the air is displaced. Shut off the water, connect the gun, and purge as before. Now crank it washer up. As quickly as safe to do so, open the trigger to keep water moving through the washer. It should come up on pressure very quickly. It is better during normal operation to keep water moving through the system. When I am through for a while, I shut down my washer, but leave the trigger depressed to allow the pump to stay full of water, and cool. This prevents further problems when I restart it.
Hope this was useful.

Regards --W/D--

Posted on Jul 17, 2009

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