How to Change the Hydraulic Fluid in a Zero Turn Mower?

The hydraulic fluid or the engine oil in a zero-turn mower is an important thing that needs to be checked regularly so as to assist the mower for working properly.

There may be an urge for changing or putting more oil if the engine of your mower takes much more time for starting as it used to take before.

Also, if the engine stops working in between without any sign of disturbance or warning, then you should check the oil levels.

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Not every mower needs to be checked regularly for hydraulic fluid levels. If your mower does not have any oil storing containers and has independent transaxles, it clearly means that your mower is maintenance-free.

It is recommended that these kinds of zero turn mowers need not be checked for oil levels until the user faces any issues.

For the mowers that utilize the oil reservoir, the hydraulic fluid should be checked on a regular basis. These mowers usually have the reservoir at the back of the seat for ease of accessibility.

For the very first time, the engine oil in a zero turn mower should be changed after 5-8 hours of usage.

Second time onwards, it should be changed every 50 hours by following proper instructions.

If your mower is nor maintenance-free then you should be very specific with the engine oil levels. Keep an eye on the engine activity and check the oil levels every time you notice anything unusual.

Besides, checking and replacing the engine oil and the oil filter is mandatory for giving an enhanced life span to your mower.

Here is a step by step guide for “How to change the hydraulic fluid in a zero-turn mower?”. Go through all the steps wisely and do not skip any.

Steps to Change the Hydraulic Fluid in a Zero Turn Mower

Steps 1: Keep the Mower on a Flat Surface

Before beginning, put on your glasses and heavy gloves, as safety must be your first priority while working with your mower.

Place the mower on a flat and clean surface and keep your tools and replacement oil handy.

Also, keep a duster for cleaning as working with the oil can cause a lot of mess.

Steps 2: Take a Container

After putting the mower on a flat surface, place a container or any type of bowl below the hose from where the oil drain valve exits.

Now, remove the dipstick and clean it properly. Ensure that no dust particle or debris enters the reservoir once you remove the dipstick.

Further, lose the cap plug with the help of a  wrench by rotating it and place a funnel under the drain tube.

Steps 3: Drain Out the Used Oil

Once you have loosened the cap plug, remove it and allow the used oil to run out into the container that you have kept below.

Now, clean the cap plug and replace it back on its position and also tighten it properly using a wrench.

Step 4: Replace the Oil Filter

After the old oil is removed, now it’s time to change the oil filter. The oil filter also needs to be changed every time you change the oil.

Rotate the oil filter counter-clockwise to loosen it and remove it.

While doing this, be certain that the oil drain pan is below the oil filter as the extra oil may flow down.

Step 5: Fill the New Engine Oil

Install the new oil filter by rotating it clockwise. Also ensure, before installation of the new filter, the area should be cleaned and wiped after the removal of the new filter.

Put a funnel and fill it with the new engine oil, Refer the user’s manual to know the type of oil that your mower is used to.

Step 6: Clean Everything

After replacing the oil and the filter, put back the dipstick and check whether everything is clean or not.

Remove the oil that may have come in contact with the other parts of the mower.

The replacement filter and oil should be according to the model and the type of the mower.

Step 7: Cross Check for Any Issues

Once everything is complete, turn the engine on and let it run for a few seconds.

Let the engine cool down and check the oil levels again by taking out the dipstick to ensure that the new oil is not leaking or flowing out.

Put the dipstick back and tighten it properly and here you go Mr. Mowerer!

If you still feel that the replacement filter and oil are not installed properly, call the customer care, and recheck whether all the steps are done carefully or not.

Final Words:

So this was a complete guide on how to change the hydraulic fluid and oil filter on a zero-turn mower.

Whether it’s a Husqvarna or a Cub cadet, these steps are common for all types of mowers.

 The only thing that may be different is the type of oil and the size of the oil filter.

Always refer to the manufacturer’s manual and follow the safety rules before starting.

 Remember not to do things in a hurry while making adjustments with your mower.

Author Profile

Gabriel Tackett
Double major in Engineering and Geology at the University of Minnesota. Experienced shooter & hunter for over 15 years. Certified NRA officer for over 10 years working as a writer at .

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