These pressure washers known as the KEW 40H and 40HA and 40HA MASTER and 40HA ENERGY and 40HA FORCE are no longer available, but SOME replacement parts ARE, check the pdf drawing HERE and Contact Us with the PART NUMBER for its availability.
A pump oil change should be done every 3 to 5 months to keep equipment running smoothly, safely and efficiently. The high pressure pump inside a hard working pressure washer is literally the heart of the machine. The purpose of the pump is to produce the water pressure which enables you to do the task at hand.
Kew Scorpion Pressure Washer Manual
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A pressure washer is a valuable piece of equipment that helps remove stubborn dirt and on many surfaces outside the house or on your car. Cleaning dirty surfaces effectively with a pressure washer is a satisfying job until the pressure washer stops working. One of the more common problems is that the pressure washer stalls when the trigger is pulled.
In general, a pressure washer shutting off when the trigger is pulled indicates a faulty unloader valve. An unloader valve is one of the most critical parts of the pressure washer. Hindrances in the piston movement, deteriorated O-rings, loose spring, inappropriate setting of the unloader valve, and faulty pressure washer trigger can cause the pressure washer to shut off when it is pulled.
This article will provide you with information about the different causes of the pressure washer stalling when the trigger is pulled or released. I will also show how to diagnose and repair the unloader valve.
Most pressure washer problems start and end with the unloader valve. The unloader valve controls the pressure and allows the water to come out of the nozzle with high strength. It diverts the flow of water into a loop to retain high pressure when the trigger is released. When the pressure in the pump exceeds the engine pressure, the engine shuts off. The most common problems in the unloader valve are cracked O-rings, accumulated dirt in the spring, or a stuck shaft.
The piston controls pressure retention and is one of the most important parts of the unloader valve. The piston moves back and forth when the pressure washer is operating. When this back and forth movement is stopped or interrupted, the pressure washer shuts off. To inspect the piston, remove it from the unloader valve.
Fixing all the problems discussed above may not fix the pressure washer die when the trigger is pulled. The trigger may have an issue. First, try another trigger to see if this is indeed the problem. If so, disassemble the trigger and see if you can find a problem with it. Replace it if you can not fix it.
The first step is to inspect the unloader valve. A pressure washer shuts off when the pressure inside the pump increases higher than the engine pressure. Inspect the unloader valve to check for the dirt around the spring, stuck shaft, or worn-out O-rings. You need to disassemble the unloader valve for a thorough inspection.
To solve this stall, you need to remove the unloader valve and inspect its various parts. Mostly the problem lies in the piston, O-rings, or the spring of the unloader valve. In addition, the pressure washer can also stall when releasing the trigger when the unloader valve is set to a very high setting.
The unloader valve regulates the pressure in the pressure washer. The pressure is adjusted and controlled manually. If the unloader valve is set to a really high setting, it can build up very high pressure in the pump that cannot be released easily. This causes the engine to stall when the trigger is released.
Once you have completed the previous steps, reinsert the valve and place the retaining pin to keep the valve in its place. Turn the pressure washer on and check its performance. Hopefully, after following all the steps, the pressure washer stalling problem is solved. 2ff7e9595c
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