How to Change the Oil in a 1990 Yamaha YFM350ER MOTO-4

Maintaining your 1990 Yamaha YFM350ER MOTO-4 is crucial for its longevity and performance. One of the most important maintenance tasks is changing the oil. Regular oil changes ensure that your engine runs smoothly and efficiently. Follow these steps to change the oil in your Yamaha YFM350ER MOTO-4.

Shop parts for a 1990 Yamaha YFM350ER MOTO-4 ATV.

Tools and Materials Needed

  • Oil filter
  • Engine oil (check your manual for the recommended type and amount)
  • Oil drain pan
  • Socket wrench set
  • Funnel
  • Clean rags

Step-by-Step Guide

1. Prepare Your ATV

Ensure your ATV is on a level surface and the engine is cool. This will prevent burns and ensure all the old oil drains out completely.

2. Drain the Old Oil

Locate the oil drain plug under the engine. Place the oil drain pan beneath it. Use a socket wrench to remove the drain plug and allow the old oil to completely drain into the pan. Once drained, replace and tighten the drain plug securely.

3. Replace the Oil Filter

Locate the oil filter, which is typically on the side of the engine. Use an oil filter wrench to remove the old filter. Before installing the new filter, apply a small amount of new oil to the rubber gasket on the top of the filter. Install the new filter by hand, ensuring it is snug but not overtightened.

4. Add New Oil

Remove the oil fill cap on top of the engine. Using a funnel, pour the recommended amount of new oil into the engine. Replace the oil fill cap securely.

5. Check Oil Level

Start the engine and let it run for a few minutes. Turn it off and wait a few minutes for the oil to settle. Check the oil level using the dipstick. Add more oil if necessary to reach the correct level.

Important Notes for the Yamaha YFM350ER MOTO-4

The 1990 Yamaha YFM350ER MOTO-4 is known for its durability and reliability. However, regular maintenance is key to keeping it in top condition. Always use the recommended oil type and change it at the intervals suggested in your owner's manual. Additionally, inspect the oil filter and other components for wear and tear during each oil change.

By following these steps, you can ensure your Yamaha YFM350ER MOTO-4 remains in excellent working condition, providing you with many more years of reliable service.

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Disclaimer: This guide is provided for general informational purposes only and is not intended to replace your motorcycle's official owner's manual. Always refer to your manufacturer's documentation for model-specific instructions, torque specifications, safety procedures, and maintenance requirements. If you are unsure or inexperienced, consider seeking assistance from a qualified mechanic or technician.