Power Washers Generac Pressure Washer Oil Change

Published on March 18th, 2015 | by Turner Anderson


Generac Pressure Washer Oil Change

Is it time for your Generac Pressure Washer to have an oil change?

Oil changes and regular tune-ups help to keep your pressure washer running smoothly.

It is recommended to change the oil in your pressure washer after the first 5 hours of use. Then, after the initial oil change, every 20 hours of use or at the beginning of every season is recommended.

Refer to your owner’s manual for your models specific oil change schedule, oil brand recommendation(SAE 30), and the specific tools needed for your pressure washer.

Tools Needed:

*Before servicing your pressure washer make sure it’s turned off and the spark plug is disconnected to reduce the risk of accidental start up.

Changing the Oil

1) Warm the Engine

Starting your pressure washer for a few minutes before the oil change will warm the oil and allow it to drain easier. After the oil is warmed, turn the engine off and allow it to cool before servicing your generator.

2) Locate Drain Plug


3) Oil Drain Pan


Place an oil drain pan under your generator to catch the oil when drained.

4) Drain the Oil


Use your socket wrench to loosen the drain plug and drain the oil from the engine.

5) Reinstall Oil Drain Plug


6) Refill with New Oil


Place a funnel in your oil fill tube and fill with the oil brand and amount recommended by your owner’s manual.

7) Reinstall Oil Dipstick


Wipe up any access oil and screw the oil dipstick back into the oil fill tube.

8) Check for Leaks

Start your pressure washer engine for a few minutes, and check for any leaks.


Regular oil changes can prolong the life of your pressure washer and keep it running smoothly. Keep up with regular tune-ups so your pressure washer is ready the next time you need something cleaned!

Check your oil before and after every use by removing the dipstick and taking quick look. Put in more oil if needed.

Jack’s Safety Tips: Before servicing or repairing any power equipment, disconnect the spark plug and battery cables. Remember to wear appropriate safety glasses and gloves to protect against harmful chemicals and debris. View our Disclaimer.

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About the Author

is the Internet Marketing Manager at Jack's and the editor of Jack's DIY Center. You'll also find him creating How-To articles, videos, newsletters, and much more.

2 Responses to Generac Pressure Washer Oil Change

  1. Kevin Kleman says:

    I went to check my oil and it was full of gasoline and oil I only used it once last year it was brand new last year if I just change the oil should it be ok

  2. Wayne LaMont says:

    i have a 2700 psi generac pressure washer. there is two ports to add and fill oil. which on is for the engine oil? is both ports for the engine oil,or seperate. As if one port is for engine oil,and the other is for compresor? pleas esend more info please

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