K2.26 Electric Power Washer

The washer motor cycles on and off when the switch is not activated. The solution to the problem was identified several times however I am unable to identify what specific sub-assembly contains the SPILL VALVE. Could someone provide me with more details?
Experienced gardeners share their insights in answering this question :
Dear frank_perra,
The spill valve is nearly always found near or under the micro-switch. If the 3.91M has its head in 2 parts….then the spill valve is incorporated with the top part of the head. In general,…machines that have the head in 2 plastic parts…the top part has the spill valve and the bottom part has the valves. Such machines it is not advisable to service the spill-valve. In these cases the whole top part is changed. This top part often contains the inlet-valve for the chemical. Care must be taken because this Chemical valve must be used again. Infact under this chemical valve you find the spill-valve unit. Then, as I said under the spill-valve unit you find the electrical micro switch. There are various other parts which are reusable when changing the upper head unit.
In other models you can change only the spill valve and not the whole head. As a rule….you always find the spill-valve where it is activating the micro switch, which stops the machine when the gun is closed. A faulty spill-valve will also result in low-pressure.
Regards,
Fulltech.

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Water leaking from a loose connection can cause the unit to cycle on and off. Verify if the pressure hose has an O-ring at the connection. If missing, this will also cause the unit to cycle on and off. While the unit is running look for any water leaks that may cause the unit to turn back on.
There could be small leaks, holes, or tears in your garden hose or high-pressure hose that are causing your pressure washer to lose pressure when you pull the trigger. If you find leaks, plug the holes or replace the hose, which should solve your pressure issues.
If you cannot shut off the water from the trigger wand and there are no known issues with the unloader valve, there is likely an issue with the wand itself. The trigger wand has a mechanism inside of it so that when the trigger is released, the flow of water is blocked.
It usually happens when the pressure washer runs out of gas. A blocked fuel filter can also stop a pressure washer from running smoothly. The gas flow to the carburetor will be limited. Solution: Check the air vent on the fuel cap is not blocked.
Some of the most common faults that will make your washer stop mid cycle include thermostat failure, problems filling up with water for the rinse cycle, or even pump problems that prevent your washer from draining. One thing that you can check yourself is the lid switch.
These include an incoming power problem, a damaged power cord, a malfunctioning door lid switch or lock, a defective user control board or timer, a broken drive belt, or a faulty or obstructed drain pump.
The number one cause of low or no pressure when using a pressure washer is a blocked or worn nozzle. Blocked nozzles will prevent water from escaping, while a worn nozzle will allow too much water to pass through, causing the pressure to drop.
PLEASE NOTE: You should always press the RESET button on the GFCI before using the pressure washer.
When the power washer does not turn on, it is either due to no water flow or no electricity going to the power washer. In other words, either a water flow or an electrical problem. The first area to check with the customer is water flow. There must be water flow through the system for the unit to turn on.
Problem: The pressure washer is pulsing.

If the machine is pulsing whilst in use, it may be that the accessory you are using has a blockage. Clear by soaking the accessory in warm soapy water and then rinsing out under the tap.

If the spark arrestor is dirty or damaged, it can cause the engine to stall. To clean the spark arrestor, you will need to remove it from the pressure washer and use a wire brush to remove any build-up. Once the spark arrestor is clean, you can reattach it and try starting the power washer again.
Problem: The pressure washer is pulsing.

If the machine is pulsing whilst in use, it may be that the accessory you are using has a blockage. Clear by soaking the accessory in warm soapy water and then rinsing out under the tap.

Surging occurs when the pressure is fine and then weakens. It is caused when the flow rate for the pump cannot be supported by the water supply. Problems can mount from there so it is important that it is dealt with as soon as possible.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

1750 psi Electric Pressure Washer: My pressure washer is losing pressure and is pulsa…
ANSWER : If the pressure washer is pulsating then that is a sign of check valve failure. You may be able to clean of replace the check valves. Replacing the head is the wrong way to go. This is completely unnecessary. If you can tell me the model number of your pressure washer then I can assist you better in pointing you in the right direction.

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Need help in getting Honda engine on NorthStar pressure washer to run.
ANSWER : Could be low water pressure I have found.Also, I purchased a can of “stuff” at Lowes today which allows you to circulate a liquid substance which lubricates the pressure pump….the pump could be frozen up…I have a rotating nozzle which I bought…and it had frozen up…this stuff works

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Oil appears to have come out of the oil filler cap. Is this a sign of overfilling the oil, or something else?
ANSWER : Id definitley say its over filled. try checking the dipstick

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Honda powwer boss 3000-whenyoupull the handale to spray it kills the engine
ANSWER : Sounds like the unloader (regulator). Try removing the nozzle, the pull the trigger with the engine running. If motor is still running then it could be the Unloader malfunctioning. If you require a new one try a bypass system for the unloader. The bypass will help save the life of the unloader.

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Kranzle electric washer will not suck up soap
ANSWER : Hi, if it has a chemical injector on the machine then the pressure at the lance will have to be lowered for it to pull in soap. it works on a similar principle to how carburetors on cars pull in fuel, bernouli principle. high pressure at one side of an orifice going to low pressure at the other side which causes a negative pressure ( vacuum) which should pull in the soap. there should be a non return valve at the orifice (hole) which prevents the water back feeding into the soap container, it is quite common for this valve to get stuck, it is just a ball, spring and o ring , and the ball sticks to the o ring. if it is this system then take the soap pick up pipe off the injector and just push the ball off it’s seat with a bit of wire.If it is a high pressure soap system then that is different, but they usually work with an injector in my experience.try taking the high pressure hose off the front off the machine and running it, if it has an injector on it it should pull in plenty off soap.hope this helps ,andy

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Has no pressure, builds up when not holding trigger on gun, but when i press trigger shoots of with pressure the nothing just water comes out.
ANSWER : Bad pump

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My dewalt dpd3300 ,why is it getting gas in the oil
ANSWER : This happens when the gas needle valve in the carburator sticks open. With it open, gas continues to flow into the carburator then into the cylinder and finally down into the crankcase. It can be caused by dirt in the needle valve’s seat, a stuck needle or float. Most of the time you can remove the float bowl and flush out any dirt. If there’s a lot you should consider flushing the gas tank and check your gas can for dirt. If the washer has been sitting for a long time the problem could be varnish is gumming up the carb works. Carb cleaner works well to flush that out. If the float, needle or seat is damaged you’ll have to rebuild or replace the carb.

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I have used the McCulloch (FH180A) three times over the course of two years. On my fourth use the pressure washer just surged on and off and I would get a tiny spray from the gun each time it surged. In other words it would do nothing. Please help… very frustrated. Thanks
ANSWER : Sounds like the problem could be low input water flow or pressure. There could be crud on the intake where you hook up the garden hose, there could be some other sort of blockage. Try hooking it up to the hose and pull the trigger (with the power switched off) and wait to see if water comes out the tip. Also look at the tip(s) themselves. sometimes a piece of crud gets into the hose and then clogs the tip.

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