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How to Change Engine Oil in a Kubota B7500

by Samuel Hamilton

Changing the oil on your Kubota B7500 tractor should be done every 75 to 100 hours of operation. Whenever you change your tractor's oil, you should also change the oil filter. Fortunately, the engineers at Kubota have designed the engine in such a way that changing the oil and oil filter requires minimal tools and time. Changing the engine oil on your Kubota B7500 should be part of a regular maintenance schedule.

Step 1

Position the drain pan underneath the drain plug of the oil tank. The oil tank is located underneath the engine compartment of your Kubota B7500, slightly behind the front wheel. B-series Kubota tractors have only one drain plug.

Step 2

Remove the oil drain plug with a 19mm wrench and allow the oil tank to drain into the drain pan.

Step 3

Remove the left side cover of your tractor's engine compartment using a 12mm wrench. Lift the tractor's hood and unscrew the bolts. The panel will then come off the side of the tractor.

Step 4

Loosen the oil filter with the strap end of your oil filter wrench or strap wrench. The oil filter is a cylindrical tube-like object sticking out of the engine compartment. Loosening the filter will cause oil to drain from the connection point to the filter, so you will need to reposition your drain pan slightly to catch any draining oil from your oil filter connection point.

Step 5

Unscrew the oil filter by hand and remove it completely before pouring its residual oil contents into the drain pan.

Step 6

Lubricate the O-ring around the edges of the new oil filter. You should use new oil for this lubrication process.

Step 7

Replace the oil plug on the bottom of the oil tank when the old oil has stopped draining from the tank.

Pour four to five quarts of 15W-40 oil into the oil fill pipe on top of the engine block.


  • Run your tractor for four or five minutes before draining the engine's oil. This will heat the oil, making it flow more freely.
  • Write the date and operation hours on the back of the new oil filter to remind yourself when your next oil change should take place.

Items you will need

  • Drain pain
  • Replacement oil, 15W-40
  • Replacement oil filter
  • 12mm wrench
  • 19mm wrench
  • Funnel
  • Oil filter wrench or strap wrench

About the Author

Samuel Hamilton has been writing since 2002. His work has appeared in “The Penn,” “The Antithesis,” “New Growth Arts Review" and “Deek” magazine. Hamilton holds a Master of Arts in English education from the University of Pittsburgh, and a Master of Arts in composition from the University of Florida.

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