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Ultimate Guide: How to Smoothly Change Gear Oil in Mio i 125 and Enhance Performance

Summary

  • Place the gear oil drain pan underneath the drain plug to catch the used oil.
  • Apply a small amount of new gear oil to the threads of the drain plug and carefully screw it back into the transmission case.
  • If you notice any unusual noises or difficulty shifting gears, it’s advisable to check the gear oil level or have the transmission inspected by a mechanic.

Maintaining your Mio i 125 motorcycle involves regular maintenance tasks, including changing the gear oil. This crucial fluid lubricates the gears and bearings in the transmission, ensuring smooth shifting and preventing premature wear. If you’re looking to tackle this task yourself, follow our comprehensive guide on how to change gear oil Mio i 125.

Materials Required

  • New gear oil (1 liter recommended)
  • Socket wrench
  • 17mm socket
  • 19mm socket
  • Gear oil drain pan
  • Funnel
  • Rags

Safety Precautions

Before starting, ensure your motorcycle is parked on a level surface and the engine is cool. Wear gloves and safety glasses for protection.

Step-by-Step Instructions

1. Locate the Gear Oil Drain Plug

Locate the gear oil drain plug on the bottom of the transmission case. It’s usually a 17mm bolt.

2. Position the Drain Pan

Place the gear oil drain pan underneath the drain plug to catch the used oil.

3. Remove the Drain Plug

Using a 17mm socket, carefully remove the drain plug. The used gear oil will start flowing out. Allow it to drain completely.

4. Clean the Drain Plug

Once the oil has drained, clean the drain plug and the surrounding area with a rag. This will prevent any contaminants from entering the transmission.

5. Replace the Drain Plug

Apply a small amount of new gear oil to the threads of the drain plug and carefully screw it back into the transmission case. Tighten it securely using the 17mm socket.

6. Locate the Gear Oil Fill Plug

Identify the gear oil fill plug on the side of the transmission case. It’s typically a 19mm bolt.

7. Remove the Fill Plug

Using a 19mm socket, remove the fill plug.

8. Add New Gear Oil

Insert a funnel into the fill hole and slowly pour in the new gear oil. Refer to your motorcycle’s manual for the recommended amount.

9. Replace the Fill Plug

Once the gear oil reaches the correct level, tighten the fill plug securely using the 19mm socket.

10. Check for Leaks

Start the motorcycle and run it for a few minutes. Check for any leaks around the drain and fill plugs. If you notice any leaks, retighten the plugs as necessary.

Additional Tips

  • Use high-quality gear oil specifically designed for motorcycles.
  • Change the gear oil regularly as per the manufacturer’s recommended interval.
  • If you notice any unusual noises or difficulty shifting gears, it’s advisable to check the gear oil level or have the transmission inspected by a mechanic.

Wrapping Up: Gear Oil Maintenance for Optimal Performance

Regularly changing the gear oil in your Mio i 125 is essential for maintaining its transmission’s efficiency and longevity. By following the steps outlined in this guide, you can perform this task with confidence and ensure your motorcycle operates smoothly for years to come.

Top Questions Asked

Q: How often should I change the gear oil in my Mio i 125?
A: Refer to your motorcycle’s owner’s manual for the specific interval recommended by the manufacturer.

Q: Can I use any type of gear oil in my Mio i 125?
A: No, it’s important to use gear oil specifically formulated for motorcycles. Using the incorrect type of oil can damage the transmission.

Q: What are the signs of low gear oil?
A: Difficulty shifting gears, unusual noises, or a decrease in transmission performance can indicate low gear oil levels.

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About the Author
Cars have been my passion from a young age as I enjoyed learning how engines work, spending hours dreaming about the supercars I hoped to own, and I now have my dream job as a product designer for a luxury automaker. In my spare time I love going to car...