A pressure washer saves time, but only when you use it the right way.
Before you start
Check the hose and gun for damage. Connect the water supply first and let water run through the machine before you switch it on.
While you clean
Start with the nozzle far from the surface and move closer slowly. Keep the lance moving. Work from the top down so dirty water runs over areas you have not cleaned yet.
Stay safe
Wear safety glasses and closed shoes. Never point the lance at people or animals.
When you finish
Switch off, release the pressure by squeezing the trigger, then disconnect the water. Store the machine out of the sun and frost.