Why is the cleaning effect not good?

Make sure that the working pressure of your pressure washer is not less than 2000 pounds per square inch (137.5 bar) and the water flow rate is not less than 2 gallons per minute (7.5L / min).

Why is it leaking?

1、Make sure you have fastened any loose connections.

2、Repair or replace any worn or damaged external parts, such as the high-pressure hose.

Why can"t the rod at the bottom rotate?

Check whether the o-ring is misplaced or broken, and if so, you need to reset the o-ring or replace it with a new one.

What tools are required for installation?

You may need to prepare an adjustable wrench、pressure washer with high-pressure hose and ⅜″ quick coupler and silicone oil for normal use.

What psi pressure washer does it fit?

This pressure washer surface cleaner should work fine as long as your power washer is within the 4000 psi max rating.