eReplacementParts.com
866-322-9842
Repair Center
Repair Center  How to Start a Pressure Washer

Why Read This Article?

  • Prevent damage to your pressure washer.
  • Tips for fast, easy setup.
  • Pressure washer setup video.

Article Breakdown

  • Incorrect pressure washer setup can cause severe performance problems.
  • Air left in a pressure washer can damage parts.
Pressure Washer Setup Steps
  • Air must be vented out of the pressure washer system in stages.

1. Run water through the garden hose.

2. Connect the garden hose to the pump.

3. Run water through the pump.

4. Connect the wand hose to the pump.

5. Run water through the wand hose.

6. Attach the wand and run water through the system again.

Video


How to Start a Pressure Washer

September 23, 2010
Prevent pressure washer performance problems with this article's steps for correct pressure washer setup. Correctly clearing air from your pressure washer also prevents damage.
Any amount of air left in a washer's water pressure system can cause severe performance issues during operation, including sputtering and up-and-down pressure symptoms. Furthermore, air left in a pressure washer's pressure pump can be hazardous for the pump and other parts of the tool.

Karcher K 2400 HH Pressure Washer
It is not uncommon for leftover air in a pressure pump to "explode" and completely destroy the pump. This kind of air explosion in a pressurized water system is called cavitation. Correctly setting up a pressure washer is fast and easy with this article's steps listed below.

Pressure Washer Setup Steps
To start a pressure washer correctly, all of the air in its system must be cleared out in stages by adding one piece of the washer at a time. Many pressure washer owners know that they need to run water through the machine before turning it on, but few owners take the time to do this one piece of the washer at a time. To ensure that all air is out of the pressure washer, water must be ran through the machine in segments as we suggest. Simply connecting all of the washer's pieces and running water through it might get you by, but you'll notice the difference in the washer's performance if you take the time to set it up the right way.

Garden Hose Valve Attachment To make pressure washer setup easier, we suggest using a garden hose valve like the one pictured above.   1. Run water through the garden hose being used.

This will expel any air trapped in the hose that would otherwise get into the pump.

Run Water Through Garden Hose

Keep the valve on the hose open until you're sure all the air is out, then close the valve. [Back to top]
  2. Connect the garden hose to the pressure washer pump.

Attach Hose to Pressure Washer Pump [Back to top]

  3. Run water through the pressure washer pump.

Keep the water running for several seconds, or until any sputtering stops.

Run Wather Through Pressure Washer Pump

This is where having a valve on the hose comes in handy, since you won't have to leave the washer repeatedly to control the water flow. [Back to top]

  4. Connect the wand hose to the pump.

Attach Pressure Washer Wand Hose [Back to top]

  5. Run water through the wand hose.

The wand hose is likely to sputter for several moments before completely clearing of air.

Clear the Pressure Washer Wand Hose [Back to top]

  6. Attach the wand and likewise run water through the system again.

Mixed water and air will make a crackling sound as they leave the wand until all of the air is expelled. The crackling will probably continue for several seconds.

Starting a Pressure WasherWasher

With all of the air properly cleared out of the pressure washer, you can expect strong, consistent pressure out of your tool.

Clear the Pressure Washer Wand [Back to top]
  Conclusion
Correctly setting up your pressure washer before start-up will protect your machine against unnecessary damage and greatly improve its performance. For pressure washer accessories, tune-up parts, and other repair parts, visit our Pressure Washer Parts page here at eReplacementParts.com.   [Back to top] What we're about.

eReplacementParts.com
7036 South High Tech Dr.
Midvale, UT 84047
visa mastercard discover american express PayPal

fancyboxy