How to Change the Oil in a 2011 Honda CRF70F

Shop parts for a 2011 Honda CRF70F Dirt Bike.

Changing the oil in your 2011 Honda CRF70F is crucial for the longevity and performance of your dirt bike. Thankfully, this process is straightforward and suitable for all levels of DIY mechanics. This guide, exclusive to MotoSport.com, covers required tools, step-by-step instructions, and key call-outs specific to the CRF70F model.

Tools & Materials Needed

  • 17mm wrench or socket (for the drain bolt)
  • Oil drain pan
  • Funnel
  • Shop towels/rags
  • Fresh motor oil (Honda recommends 10W-40 or 10W-30 four-stroke motorcycle oil; capacity is about 0.6 quarts, or approximately 19 ounces)
  • Replacement crush washer (optional, but recommended for proper sealing)
  • Gloves (optional, to keep hands clean)

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    • Start the bike and let it idle for 2–3 minutes. This warms up the oil, helping it flow more easily and carry away more contaminants.
    • Turn off the engine and allow it to rest for a minute to ensure safety before touching hot components.
  2. Prepare the Bike
    • Park the CRF70F on a firm, level surface using the kickstand or a bike stand to keep it upright and stable.
    • Place your drain pan under the engine directly below the oil drain bolt, which you'll find on the right side of the bike's engine case.
  3. Remove the Drain Bolt
    • Use your 17mm wrench or socket to loosen and remove the oil drain bolt. Do not remove the adjacent bolt that has a spring and piston with holes—that's not the oil drain bolt. The correct drain bolt is specifically a 17mm bolt on the underside or side of the engine case.
      Note: The CRF70F has a simple design—no oil filter to change.
    • Allow all oil to drain out. To remove as much old oil as possible, gently tilt the bike side to side and front to back.
  4. Inspect and Reinstall the Drain Bolt
    • Check the drain bolt and crush washer for damage or excessive wear. Replace the crush washer if needed for a proper seal.
    • Thread the drain bolt back by hand to avoid cross-threading, then tighten it firmly with your wrench. Do not over-tighten; snug is sufficient.
  5. Add Fresh Oil
    • Remove the oil filler cap/dipstick, located on the right side of the engine case. Clean the area around it with a shop rag to prevent debris from entering the engine.
    • Using a funnel, pour in fresh oil. For the CRF70F, you'll need just over half a quart (approx. 0.6 quarts or 19 ounces) of oil. Do not overfill.
    • Wait a moment for the oil to settle, then insert the dipstick without screwing it in. Verify the oil level is between the lower and upper marks. Add more oil if needed.
    • Reinstall the dipstick and tighten the cap securely.
  6. Check for Leaks and Final Inspection
    • Start the engine and let it idle for 2–3 minutes. Observe under the engine for any signs of oil leaks.
    • Shut off the engine, wait a couple of minutes, and recheck the oil level as described above. Top up if necessary.
    • Dispose of used oil properly at a local recycling facility or auto parts store that accepts waste oil.

2011 Honda CRF70F Specific Call-Outs

  • No oil filter: The CRF70F does not have a replaceable oil filter—just change the oil at regular intervals for best engine life.
  • Drain bolt location: There are two bolts on the engine case; ONLY REMOVE the 17mm drain bolt underneath the engine for oil changes. The other bolt retains a spring assembly and is not for draining oil.
  • Oil capacity: Use about 0.6 quarts (19 ounces) of oil. Do not overfill; excessive oil can cause performance issues.
  • Recommended oil: Honda HP4S full synthetic 10W-30 or standard 10W-40 motorcycle oil are both suitable and widely available.
  • Dipstick check: Always check oil level by setting the dipstick threads in the opening but not screwing it in before reading the level.

Tips for Longevity and Performance

  • Change oil after every 10–15 hours of operation or at least every riding season.
  • Clean around the filler and drain areas thoroughly to avoid introducing dirt into the engine during oil changes.
  • Keep a maintenance log with date and hours whenever you change the oil.

Conclusion

With a few basic tools and about 15 minutes, you can keep your 2011 Honda CRF70F's engine healthy and running strong. Regular oil changes are the best way to ensure fun, reliable riding for years to come.

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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.