Frequently Asked Questions

Contractor's Pressure WasherPressure Washer Information, and Troubleshooting

Pressure washers are nothing to treat as a toy. They are seriously powerful machines able to do damage to the objects at which the nozzle is aimed. Handle your pressure washer in a respectful manner, maintain it properly, and refer to your User Manual, and many of these questions will reveal their answers to you through experience. However, if urgency means you don’t have time to learn these things through experience, we have you covered.

Shop Power Wash StoreThe following questions are ones we frequently have customers ask us, and therefore decided to post as information we think everyone should know or have access to.

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A: WHAT KINDS OF DETERGENTS CAN I USE IN MY PRESSURE WASHER?

All of our detergents are environmentally friendly, and can be used in any pressure washer with a compatible pump. Refer to your User Manual to find out what your pressure washer needs in order to work with detergents.

A: WHAT DO I DO ABOUT A CLOGGED NOZZLE?

CLEAR IT IMMEDIATELY. Having a clogged nozzle will make the pressure build up in the pump, and can very quickly damage it.

A: HOW SHOULD I TRANSPORT MY PRESSURE WASHER?

Make sure your fuel shut-off valve is in the OFF position to prevent fuel from spilling out. Other than the fuel shut-off valve, just make sure your pressure washer is secure and not tipping everywhere. Make sure other things are not falling on your pressure washer, as well.

A: HOW DO I REPAIR A PUNCTURE IN MY PRESSURE WASHER HOSE?

In some cases, you don’t. A pressure washer hose handles up to 8,000 PSI. If the hose has a puncture in it, you should buy a new one. Trying to repair the hose yourself could result in major injury or death upon your next usage of the machine. If the hose is excessively worn and the internal wire braids are exposed, it is best to take the hose out of service.

HOWEVER, if the hose is relatively new and in good shape, a hose end repair kit may be worth the investment. If you do choose to repair your pressure hose, we have pressure hose repair kits available in our shop, and we're eager to help teach you how to properly use your repair kit so you don't get hurt.

A: HOW FAR FROM THE SURFACE I’M CLEANING SHOULD I HOLD THE NOZZLE?

If you’re cleaning a more delicate surface, such as a house, you will want to hold the nozzle about 3 or 5 feet from the surface of the house. If you’re cleaning more abrasive, hard materials, you’ll want to hold the nozzle about 6 inches from the surface you’re cleaning. The farther you are from the surface the lower the impact pressure will be on it.

A: WHY DOESN’T MY PRESSURE WASHER REACH FULL PRESSURE?

There are many possible explanations for why your pressure washer isn't reaching full pressure. Your packings could be worn down, causing your pump to be less effective and have less of a seal around its openings. Your inlet water valve could be clogged, or the filter could be plugged, and not enough water could be getting into the machine. There could be a kink in the hose. Etc. Contact our exceptional customer service team with other possible questions about why your pressure washer isn't reaching full pressure.

A: WHY ARE THERE DIFFERENT COLORED NOZZLES?

Different colored nozzles are for different purposes:

  • Red 0° nozzle – delivers very precise, concentrated stream – cleans small area
  • Yellow 15° nozzle – delivers less concentrated stream – surface preparation
  • Green 25° nozzle – delivers broad stream – best for removing mud and dirt
  • White - 40º nozzle - delivers widest stream - best for wood restoration
  • Blacklow pressure nozzle – very broad stream – best for adding detergent

A: WHAT KIND OF OIL SHOULD I USE IN MY PRESSURE WASHER?

Refer to your User Manual for instructions on which oil to use for which part of your pressure washer. Most pumps use a 30W non-detergent oil.

A: HOW DO I PROPERLY STORE MY PRESSURE WASHER?

To properly store your pressure washer, you must first drain the gas from its motor and run it dry. The pump should have antifreeze run through it, and left inside the pump. This will protect the pump from freezing as well as protect the pump internally from corrosion caused by the water. In addition, it lubricated and protects the seals from drying out, making it ready to use at a moment's notice. Disconnect all the hoses from the machine, empty them of liquids, and wipe them down. Store your pressure washer in a cool, dry space.

A: WHICH IS MORE IMPORTANT—GALLONS PER MINUTE (GPM) OR POUNDS PER SQUARE INCH (PSI)?

Both or neither. Gallons per minute says how much rinse you’ll be getting after the machine has cleaned the dirt from whatever surface you’re washing. Pounds per square inch tells how much you’ll be able to clean off a surface. GPM is generally more important for farmers or fast rinsing and flushing. PSI is more important for people cleaning abrasive materials such as bricks or concrete, where dirt and paint can really soak in and get a grip on the material. Check out our selection of GPM / PSI pressure washers, and see which one you prefer.