Our team at Crown Cleaning Systems in Ohio wanted to offer this quick guide on how to properly maintain and care for your Karcher pressure washer.
Prior to Using
The first thing to remember is to always clean your Karcher pressure washer before every use. Debris can build up after each use, so this step is very important. Using a damp rag, also wipe and clean off your Karcher pressure washer parts like springs controls, cooling fins, the muffler, and even the pump and engine. Be certain you also check the pressure hose for any cracks or other damage that could cause leaks.
Another important part to check before use is the inlet screen. Always inspect and remove debris. If you encounter any damage to the screen, be sure to replace it.
Proper Storage During Winter
If you have any water leftover inside of your pressure washer, it can potentially freeze (over the winter) and damage your pump. You can find special pump antifreeze that is made to protect your pump and water from freezing during storage. Also, you can use RV antifreeze that is alcohol-free.
After removing your sparkplug, let the antifreeze cycle in the pump – you can then connect up the spark plug.
Checking the Oil
Just like with a car or lawnmower, your Karcher pressure washer motor will need oil changes. For most pressure washers, you will find a drain plug around the bottom of your unit. Never use oil that has detergent in it since it can cause issues with the pump. Only use SAE 30 oil (non-detergent). While with normal use you may not need to change the oil until the 500- hour mark, it is recommended to periodically check it for dirt, etc.
Whether you’re storing your washer over the winter or will not be using it, you have to release the pressure before storing it. Once you have allowed the motor to idle for about 5 minutes, set the throttle to the slow setting and shut it off as soon as the engine keeps a continuous speed. Then spray the remaining left-over water from your gun until all the pressure is released. You can then detach the gun and hose.
The hose and gun should not be disconnected until they have been depressurized in this manner.
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