Honda outboard lower unit oil change

Introduction

This tutorial will guide you through the process of changing the lower unit oil on a Honda outboard motor, specifically the BF38 model. This procedure is similar for various outboard motors, including those from Mercury, Johnson, and Evinrude. Regular maintenance of your outboard motor is essential for optimal performance and longevity.

Step 1: Prepare for Oil Change

• Gather necessary tools and materials:
  • Drain pan or bucket
  • Teflon tape
  • Pliers
  • New lower unit oil
• Ensure you have a clean working area and all safety gear on hand.

Step 2: Drain the Old Oil

• Locate the drain plug on the lower unit of your outboard motor.
• Remove the drain plug carefully to let the old oil drain out completely into the drain pan.
• Allow sufficient time for the oil to drain. You can speed up the process by loosening the fill plug as well.

Step 3: Inspect and Prepare for Filling

• After draining, inspect the drain plug and surrounding area for any debris or old oil residue. Clean as necessary.
• If you encounter any issues with the drain plug fitting, consider using a smaller diameter tube with Teflon tape for a proper seal.

Step 4: Fill with New Oil

• Insert the fill tube into the fill hole of the lower unit.
• Begin filling with new lower unit oil. Fill until oil starts to seep out of the drain hole, indicating the unit is full.
• Replace the drain plug securely after filling.

Step 5: Final Checks

• Once the drain plug is replaced, double-check the oil level. It may be beneficial to let the motor sit for a few minutes and then check the level again to ensure proper filling.
• Clean up any spills and ensure all tools are removed from the area.

Conclusion

Changing the lower unit oil of your outboard motor is a straightforward process that can significantly impact its performance. By following these steps, you can ensure your motor is well-maintained. After performing the oil change, consider scheduling regular maintenance checks to keep your outboard in top shape.