Having problems with your Honda Black Max 2600 PSI Pressure Washer ?

I have a honda 2600 pressure washer. After running fine for a couple of seconds the water will stop flowing out the tip. It is receiving water,but will not flow it to the pressure hose. I even disconnected the pressure hose and no wate was flowing out. When I shut the pressure washer off it would then flow water to the hose again. Please help


Answers :

This is a symptom caused by a sticking Unloader valve. The Unloader valve is inside the pump outlet body under the large black knob.
\015\012Example picture : http://www.msservice.net/product_spotlight.html
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\015\012Before doing any dis-assembly try this procedure first. This may sound weird but it often works. We do this with a short piece of garden hose,,,,, Add 3 to 4 ounces of engine oil into the water inlet by pouring the oil into and old short / cut off garden hose with the end elevated but connected to the pump inlet.
\015\012Slowly pull the engine starter cord so as to pump the added oil into the pump and let it sit over night. Just keep pulling the starter cord "IGNITION OFF" until you note oil exiting the high the high pressure hose connection.
\015\012 Then connect everything like you normally would the next day.
\015\012MAKE sure to purge the water supply hose of air at the pump connection before starting the engine.
\015\012Start the engine. NOTING that your going to shoot out the oil you put in the day before..... Pull the wand trigger every 3 to 4 seconds so you cause the Unloader / thermal relief valve to stroke within the pump body. Don't give up... you have to do this for an extended period of time so that you have HIGH pressure each time you pull the wand trigger.
\015\012With the engine still running.... let it run trigger off for about 1 minute at mid engine speed. Pull the trigger again and see if you have high pressure. Do another long pause... then use as you normally would.
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\015\012IF the above lubrication process does not work....
\015\012The Unloader / thermal relief valve needs to be dis-assembled so that the springs and seals can be lubricated with Lubriplate #105 white grease. Make sure to also lubricate the casing of the pump body before putting everything back into the pump body.
\015\012Here is the white grease tube your looking for at any automotive parts supply.
\015\012 http://www.lubriplate.com/products/greases/no-105-motor-assembly-grease.html
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\015\012This should get you going again. Just note that Unloader valves will notoriously stick after end of season storage upon the next use. It is important after an extended non-use period that the wand trigger is cycled every 3 - 4 seconds to exercise the Unloader valve springs and seals in the pump body. You only need to do this for about 45 seconds.
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\015\012Thanks for choosing FixYa,
\015\012Kelly
The water admittance valve is sticking. Disassemble the valve and clean the bore with crocus cloth on a piece of dowel rod. Replace the O rings on the spool. Lube with a dab of plumber's grease and reassemble. The valve admits more wwater to the pump until the high pressure is reached. When you trigger the wand, the pressure drops a little and more water is admitted to the pump. Once you understand how this works it will become clear. The valves tend to get deposits on the walls of the bore AND the O rings deteriorate. You can often get a valve repair kit with all the O rings, or take the rings to a supplier of O rings near you to get correct size.
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