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I have a Kew. 1502v power washer. When I start it there is full pressure at the lance for a moment. It remains like that until I switch off and the process repeats itself all over. The heater is

I removed and cleaned the valve at the pump end. I notice that there is a reed valve there and am wondering how to confirm if it is working. I disconnected it from the board but no help.

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

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SOURCE: Karcher pressure washer won't start

Dear ralph_birtwi,
Most pressure washers when their gun is released, the machine stops automaticaly. This is done ny means of a control valve. When the gun is closed...pressure is built and the control valve moves and switches a micro switch off. In your case the micro switch is still closed in off position. Now this happens if a machine is left and stored with pressure in it., This control valve could get jammed and leaving the micro switch in off position. It could also stay in off position by sticking, due to incorrect chemical.
So the control valve or even called spill valve, must be renewed.
Sometimes a little lubrication with the right type of silicon grease will get the control valve working again. This job is sometimes delicate and better done by a qualified technician.
Regards,
fulltech.

Posted on Apr 12, 2009

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SOURCE: I have an old kew pressure washer and when I pull

Dear dennis_partr,
In general all pressure washers have a control valve. This is sometimes refered to as the Spill Valve. When the trigger is pulled, the spill valve is in normal position. When the trigger is released, the spill valve compresses to let water circulate from its bottom part. If when the trigger is pulled and the bottom part of the spill valve does not close, then water keeps on circulating and hence no pressure. In this case change the spill valve with a new one. Also there could be a fault in the sucktion valves. If the sucktion vaves do not close, also water keeps on circulating. One also can examine the delivery valves. If these are not closing, then water is being sucked while delivering. Hence no pressure. Another cause but very rare, is that the swash plate that is pushing the pistons got loose. The electric motor will be turning, but the pistons stay in the same position.
I mentioned many causes, but usualy it is the spill valve. If with a new spill valve, there is still no pressure....then you must tackle the sucktion and then the delivery valves.
I wish to add that I assume that you have the correct lance and correct nozzel size. A worn out nozzel, will result in low prssure too.
Regards,
Fulltech.

Posted on Apr 22, 2009

  • 68 Answers

SOURCE: My Hobby88 pressure washer stopped working, now I

Could be just a faulty capacitor that helps the motor to start. You will find this next to the motor if you remove the top cover.

Posted on Apr 21, 2010

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1 Answer

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not really. It sounds like either a motor or unloader problem I work on washers full time and in my honest opinion these electric washers and a ripoff. You cant work on them as they dont even use industry standard parts. I would invest in a gas engine washer for small homeowner needs. If you must use an electric one, stay away from the ones at Walmart/homedepot etc. check out pressurepro com They can give you better options. Good luck

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possibly a blocked lance jet, does the spray pattern of the jet look good, a nice fan?

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Could be just a faulty capacitor that helps the motor to start. You will find this next to the motor if you remove the top cover.

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Have the same p-washer (5-6 years old) and the same problem. Opened it and the pressure switch is the crook. A plastic pin has an inner and an outer spring on it (two consentric springs). The smaller inner spring is completely rusted away so the switch no longer operates correctly. Obviously the spring was of a too low quality. The service office say a new switch cost around 400NOK (50 euros) - so the washer is too expensive to mend. But I will try to get it working without the inner spring. Doubt if I succed. So will have to dump the washer.

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2 Answers

I have a Kew Hobby 80. The output from the lance is not constant but pulsates.


Could be the input water pressure is not sufficient. There is a pressure valve inside the machine that will cut off the motor if input pressure is too low or non existent.

Try a different source for the water input.

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1 Answer

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hello,

Try remove the front half of your lance and with the water hooked up and on full try pull your trigger a few times on and off... Then try start the engine if it doesnt go with the trigger off try start it with the trigger pulled on... then replace the front half of your lance and see it the pressure is there now.

Sometimes this can loosen a stuck bypass valve otherwise if it is stuck bad then it will have to be stripped down and cleaned up

Hope this helps

Brad

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1 Answer

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