How to Change the Oil in a 2015 Yamaha TTR110: A MotoSport.com Proprietary Guide

Shop parts for a 2015 Yamaha TTR110 Dirt Bike.

Regular oil changes are essential to keep your 2015 Yamaha TTR110 running smoothly and to extend the life of its engine. This guide gives you a full breakdown of the tools you’ll need, every step in the process, and model-specific tips you need to know. Whether you’re a seasoned racer or a casual trail rider, follow this oil change procedure to make sure your dirt bike stays in top shape.

Tools & Supplies Needed

  • 12mm wrench or socket/ratchet (for drain bolt)
  • Oil drain pan
  • Funnel (narrow tip recommended)
  • Rags or shop towels
  • Fresh engine oil (Yamalube 10W-40, motorcycle-specific)
  • Measuring cup or reference to oil bottle's measurement markings
  • Spray cleaner/degreaser (optional, for cleanup)

Recommended Oil Type – Capacity

  • Oil Type: 10W-40, motorcycle-specific (Yamalube strongly recommended; never use automotive oil with friction-reducing additives)
  • Capacity: 0.85 quarts (27-28 ounces)

Model-Specific Call-Outs for the 2015 Yamaha TTR110

  • There is no oil filter on the TTR110; it uses just a screen, so oil changes are quick and simple.
  • Drain bolt is 12mm and located on the left (shift lever) side of the engine.
  • The same oil lubricates both engine and clutch—using automotive oil can cause clutch slippage; always use motorcycle-specific oil.
  • If you notice oil leakages or damage to the filler cap O-ring, replace it during the oil change.
  • Oil bottles (such as Yamalube) often have useful measurement markings–ideal for pouring the exact quantity needed.

Step-by-Step Instructions

  1. Warm Up the Engine
    Let your TTR110 run for 5-10 minutes to get the oil warm–this helps the oil drain out more completely and carries away contaminants more effectively.
  2. Prepare Your Work Area
    Put the bike on a stand or level ground. Place your oil drain pan beneath the engine, aligned with the drain bolt.
  3. Remove the Drain Bolt
    Using your 12mm wrench or ratchet, loosen the oil drain bolt on the left side of the engine (just behind the shifter). Remove it by hand to avoid losing the washer; allow all oil to drain into the pan.
  4. Inspect the Drain Bolt and Filler Cap O-ring
    Check for metal shavings or debris on the drain bolt. Inspect the O-ring on the oil filler cap for cracks or flattening–replace if needed.
  5. Reinstall the Drain Bolt
    Wipe any dirt from the mating surface, reinstall the drain bolt, and snug it securely. Avoid overtightening. Wipe up any drips or spills underneath.
  6. Add Fresh Oil
    Remove the oil filler cap. Using the funnel, add 0.85 quarts (27-28 oz.) of 10W-40 Yamalube. For the smoothest pour and least spillage, pour with the slanted side of the oil bottle down, and watch the built-in measurement scale if available.
    Replace the oil filler cap, checking the O-ring as you do.
  7. Check Oil Level
    Start the bike and run it for 30 seconds, then turn off and let sit for a minute. Remove the filler cap and check that the oil level is between the “Min” and “Max” marks on the dipstick or sight glass. Add a small amount of oil if needed.
  8. Clean Up – Inspect
    Wipe away any spilled oil from the engine and frame. Double-check for any leaks around the drain bolt and filler cap.
  9. Dispose of Old Oil Properly
    Take your used oil to a local recycling center–never dump it in the trash or the environment.

Additional Tips Just for the Yamaha TTR110

  • It’s normal for these bikes not to have an oil filter; follow a more frequent oil change schedule if you ride in dusty or muddy conditions.
  • Always check the oil level after each ride, especially with a new bike or after major work.
  • The TTR110’s oil screen rarely clogs, but if you notice a big reduction in oil flow, have it checked by a qualified mechanic.
  • If you replace or clean your air filter, do it at the same time as the oil change for a complete service.

Troubleshooting

  • If you see milky oil, you may have water contamination–address immediately.
  • Repeated low oil readings often mean a leak–inspect all gaskets and bolts carefully.
  • Clutch feels like it’s slipping after oil change? Double-check that you used only motorcycle-specific oil without friction-reducing additives.

Why Change Oil Yourself?

  • Save money–this is a quick job you can finish in 30 minutes or less.
  • Know your bike–regular maintenance familiarizes you with your TTR110’s condition and can spot issues early.
  • Guarantee the use of proper, high-quality oil every time.

Following these steps will keep your 2015 Yamaha TTR110 running at its best. For more proprietary guides, OEM parts, and expert dirt bike content, visit MotoSport.com—your source for riding and wrenching know-how.

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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.