How to drain outboard motor oil?

If you own an outboard motor, you must learn how to properly drain the oil. It is an essential process to ensure proper maintenance of your motor and ensure it runs smoothly for years to come.

Here’s a step-by-step process on how to effectively drain outboard motor oil-

Step 1: Prepare the Boat for Draining Oil

The first step is to prepare the boat for the oil change. Ensure that the boat is in a level position and turn off the motor. Also, make sure that the tilt is in a down position to drain the oil completely.

Step 2: Gather the Right Tools

Make sure you have all the required tools to drain the oil. You will need a screwdriver, pliers or wrench, oil drain pan or container, and an oil filter wrench.

Step 3: Find the Oil Drain Plug

Locate the oil drain plug on your outboard motor. It is usually located on the bottom of the motor near the propeller shaft. You can refer to the user manual for the exact location.

Step 4: Unscrew the Drain Plug

Using a screwdriver, unscrew the drain plug counterclockwise. Keep the oil drain pan underneath the drain plug to collect the used oil.

Step 5: Drain the Oil Fully

Once the plug is loose, pull it out and let the used oil drain into the oil drain pan. It’s crucial to let the oil drain completely before replacing the drain plug.

Step 6: Remove the Oil Filter

After draining the oil, use an oil filter wrench to remove the old oil filter. The filter is usually located next to the drain plug.

Step 7: Clean and Install a New Filter

Clean the mounting surface for the new oil filter and install the new filter according to the instructions on the packaging.

Step 8: Refill with New Oil

Once the oil filter is replaced, refill fresh oil through the oil filler hole. Add oil until the oil level reaches the “full” mark.

Step 9: Check Oil Level

Use the dipstick to check the oil level. Ensure the oil is at the recommended level.

Changing the oil in your outboard motor is an essential part of proper maintenance. Following these simple steps can help you save money and maintain your motor effectively. Remember always to refer to your user manual before performing any maintenance work on your boat motor.

Have something to add or correct? Please let us know by clicking here.
* See disclaimer in the footer of the site for use of this content.

Related Questions


Latest Posts

Don't Miss

Our Newsletter

Get the latest boating tips, fishing resources and featured products in your email from!