Pressure Washer Guide

How to repair a pressure washer?

The first checks to be carried out on your high pressure washer

The majority of pressure problems come from leaks. However, the leaks in your high pressure washer can be multiple: we will therefore start by doing a small check up on your high pressure washer.

The filter

The filter is the first basic check you need to perform on your device. Indeed, if your filter is clogged, your karcher will not work as it should. The filter is located behind the water inlet connection.

You need to unscrew it, remove the filter gently with pliers and check its condition. If it is dirty, clean it by running it under a running stream of hot water, and brush it gently with an old toothbrush to remove the dirt.

Hose or pipe

When using the high pressure cleaner, your hose withstands a lot of pressure: it must absolutely be in perfect condition to play its role correctly. Take the time to inspect your hose; it must not be folded or cut.

Joints

You probably know it, but there are a lot of gaskets that make it possible to seal your pressure washer. visit Smart Pressure Washer for more info.

A simple check to perform is to inspect all joints on the hose.

For a first check, we are not going to disassemble your entire device but, if you are required to do so, carefully inspect all the joints that you will see. They must not be cut, damaged or worn.

How do I fix a pressure problem on a leaking Karcher, Lavor, etc. pressure washer?

Once these first checks are done, we'll get down to business.

If your pressure washer turns on but it lacks pressure, there is a good chance that there is a leak. It is also possible that the motor of your pressure washer will not turn on and unpressurized water will spurt out.

Either way, your device has a serious problem, but don't worry - we'll walk you through how to fix it.

The pressure washer is leaking

First of all, we are going to have to locate the leak of your pressure washer, as there is a lot of place where a leak can come from in this type of device. Do not hesitate to take pictures during disassembly in order to be able to easily replace the elements during reassembly.

Locate the place where the karcher is fleeing

1. Disconnect the hose connected to the handle of your appliance.

2. Remove the covers of your device by removing the screws located at the back of it (on some devices, you have to remove the wheels held by clipped axles; a flat screwdriver is enough to remove them).

3. Remove the water inlet fitting (optional: it depends on the devices).

4. Remove the front cover as well as the pipes and connections that can be connected between the outer covers and the interior of the appliance.

5. If you removed it earlier, replace your water inlet fitting.

6. Connect the water inlet hose.

7. Connect the hose connected to your handle.

8. Operate the handle of your device.

9. You should see where your flight is coming from.

You should know that winter is merciless with your device. Indeed, water circulates in your device and if it is not sheltered, the water freezes with negative temperatures. Some ducts or joints can therefore be affected and damaged with the cold.

If you find that the leak is coming from inside the block containing the engine, we will explain how to disassemble it in the next paragraph. (The parts possibly in question will be the high pressure guide head, the cylinder head, the pump or cylinders and various gaskets .)

Leaking high pressure guide head and / or high pressure cylinder head

The two pieces are complementary. You will need to make sure you identify which of these two parts is faulty, and replace it. (If you have not already done so, follow the instructions in the paragraphs: “ Locate the leak ”)

In the rest of this article, you will have to dismantle the upper part of the engine block.

How to change the high pressure guide head and / or the high pressure cylinder head?

1. Disconnect the hose connected to the handle of your appliance.

2. Remove the covers of your device by removing the screws located at the back of it (on some devices, you have to remove the wheels held by clipped axles; a flat screwdriver is enough to remove them).

3. Remove the water inlet fitting (optional: it depends on the devices).

4. Remove the front cover as well as the pipes and connections that can be connected between the outer covers and the interior of the appliance.

5. Keep only your engine block.

6. Remove the remaining elbows and fittings, usually held in place by clips (a flat screwdriver will do).

7. Remove the 4 screws from the upper part of the engine block.

8. You now have access to the desired parts.

9. Replace the defective parts (note: you will surely have to recover the gaskets, springs and valves located in the high pressure guide head or the cylinder head.)

10. Reassemble your device by repeating the above steps in reverse order.