How to Change Yamaha F225 Engine Oil

If you neglect changing the engine oil regularly in an outboard, you’ll probably notice increased temperatures, louder engine noise, poorer compression and worn parts. 

Changing an outboard’s engine oil is an easy bit of maintenance you can do yourself. Watch the video above  or follow the steps below to learn how to change the oil in a Yamaha F225 outboard. 

NOTE: We changed the oil on a Yamaha F225TXRC, but the process is the same or similar for most 4-stroke makes and models.

Yamaha F225 outboard oil change kit

Tools and Parts – Yamaha F225 Outboard Oil Change

  • Ratchet 
  • 14mm socket
  • 73mm oil filter wrench
  • Torque wrench
  • Drain pan

NOTE: You can purchase the oil filter, crush washer and oil separately, but the oil filter kit includes them all, and it costs less to buy the kit.

Buy Yamaha outboard oil change kit

Buy Yamaha marine performance engine oil

Changing the Oil in a Yamaha F225 Outboard

Step 1. Remove the engine cowling, followed by the oil filler cap from the top of the powerhead.

Yamaha F225TXRC oil change

Step 2. Put a drain pan under the outboard, and remove the 14mm oil drain bolt and crush washer from the right side of the upper casing.

Yamaha F225TXRC oil service

Step 3. Wait for the old oil to drain out, then install a new crush washer (included in the oil filter kit) and reinstall the 14mm drain bolt. Torque the drain bolt to 19 foot-pounds.

Step 4. Remove the old oil filter from the lower right side of the powerhead using a 65mm oil filter wrench.

Yamaha F225 outboard oil filter

Step 5. Put a thin film of oil onto the new oil filter O-ring, then install the new oil filter (included in the oil filter kit) and torque it to 13 foot-pounds.

Yamaha F225 outboard oil change filter

Yamaha F225 outboard oil filter replacement

Step 6. Fill the engine with Yamalube 10W30 engine oil (included in the oil filter kit), and reinstall the oil filler cap.

Yamaha 225HP outboard oil change service

NOTE: The engine takes between 4 and 5 quarts, depending on how thoroughly you drained the old oil.

Step 7. Remove the dipstick and check the oil level. Top off the oil if necessary, then reinstall the engine cowling and you’re done.

Ready to change out the gearcase lube on your Yamaha outboard? Watch the video above to see how to change the gearcase oil on a Yamaha F225 engine. 




Commercial Discounts

Special discounts for companies in the marine industry


Government Sales

Discounts for federal and most state and municipal agencies