How to Change the Oil in a 2015 Honda CRF110F

Shop parts for a 2015 Honda CRF110F Dirt Bike.

MotoSport.com brings you a detailed, model-specific DIY on changing the oil in your 2015 Honda CRF110F. Keeping your dirt bike’s engine oil fresh is critical for performance and longevity. Here’s everything you need to know, from tools and supplies to each step and important call-outs unique to this model year.

Tools and Supplies Needed

  • Replacement engine oil: Use a high-quality four-stroke motorcycle oil meeting Honda’s requirements. The oil capacity is 1.0 liter (1.1 US qt) when draining, or 1.15 liter (1.22 US qt) if disassembling the engine.
  • Oil drain pan
  • 17mm socket or wrench (for the oil drain bolt)
  • Torque wrench (to 24 Nm/18 lbf·ft for reinstalling drain bolt)
  • New sealing washer for oil drain bolt
  • Clean rags for cleanup
  • Parts cleaner or brake cleaner (optional, for cleaning the seating surface)
  • Funnel (helps with pouring new oil)
  • Service manual (optional, for extra reference)

Step-By-Step Oil Change Instructions

  1. Warm up the engine: Start your CRF110F and let it idle for 3-5 minutes. Warming the oil helps it drain more completely.
  2. Shut off and prepare: Switch off the engine, let the bike sit for 2-3 minutes for oil to settle. Place the bike upright on a firm, level surface. Remove the seat/panel as needed for easier access.
  3. Remove oil fill cap/dipstick: Unscrew and set it aside. This step prevents a vacuum, letting oil drain freely.
  4. Position drain pan: Put your drain pan directly underneath the crankcase.
  5. Remove drain bolt: Use a 17mm wrench to undo the oil drain bolt (located on the underside, right side of the engine). Allow oil to drain completely. Avoid removing the cam chain tensioner push rod bolt by mistake (it’s adjacent and should not be touched).
  6. Ensure complete drainage: Gently tilt the bike side-to-side to help all oil exit. Let it drip until it slows to an occasional drop.
  7. Clean and inspect: Wipe the area around the drain hole; ensure mating surfaces are clean. Inspect the oil for debris or metallic flakes as a health check.
  8. Replace sealing washer: Install a new sealing washer onto the drain bolt. This is crucial for a good seal. (Old washers may cause stubborn leaks.)
  9. Reinstall and torque drain bolt: Hand-thread, then torque to 24 N·m (18 lbf·ft).
  10. Refill with new oil: Using the funnel, pour in 1.0 liter (1.1 US qt) of fresh oil. The oil fill is at the top right side of the engine.
  11. Check O-ring: Inspect the O-ring on the oil fill cap/dipstick. Replace if cracked or damaged.
  12. Reinstall oil fill cap/dipstick: Secure it snugly.
  13. Start and circulate: Start the engine and allow it to idle 3-5 minutes. Watch for oil pressure, and check for leaks at the drain bolt.
  14. Stop and check level: Turn the engine off, let it settle for a couple of minutes. Hold the bike upright and check the oil level using the dipstick. Top off to the upper level mark as needed; avoid overfilling.
  15. Final leak check: Inspect around the drain bolt and filter cap for seepage. Wipe clean, recheck torque if needed.
  16. Properly dispose of old oil: Pour used oil into a sealed container and take it to an approved recycling center. Never dump oil down drains or in the trash.

Important Model-Specific Call-Outs

  • The 2015 CRF110F is not equipped with a replaceable oil filter — instead, it uses a re-usable internal oil screen. Inspect and clean this screen (follow the service manual) at major service intervals, especially if the oil is contaminated or after an engine issue. Most owners can focus on regular oil changes unless you notice performance drops or have internal work performed.
  • Do not confuse the cam chain tensioner pushrod bolt with the oil drain bolt. Removing the wrong bolt can cause significant issues. The oil drain bolt is 17mm and located at the bottom right of the crankcase.
  • Always use a new sealing washer for the drain bolt to prevent leaks — they are inexpensive and protect your engine and garage floor.
  • Honda recommends checking the oil level after every ride, especially after an oil change, as this engine is known for using small quantities of oil and is sensitive to low levels.
  • If you ride in dusty conditions, change oil more frequently — every 10-20 engine hours, as contaminants accelerate engine wear.
  • Extra tip: The MotoSport.com oil change kit comes with the right oil and washer for your bike, ensuring hassle-free maintenance every time.

Conclusion

Changing the oil in your 2015 Honda CRF110F is inexpensive insurance for years of reliable trail fun. Follow these MotoSport.com-approved steps and ride with confidence. For parts, tools, or kits, visit MotoSport.com — your trusted source for everything dirt bike.

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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.