How to Change the Oil in a 2007 Honda CRF70F

Shop parts for a 2007 Honda CRF70F Dirt Bike.

Maintaining your 2007 Honda CRF70F with regular oil changes is vital to keeping your dirt bike running smoothly and extending engine life. Learn how to change the oil yourself in less than 30 minutes with this step-by-step guide, proprietary to MotoSport.com.

Tools and Materials Needed

  • 17mm wrench or socket (for removing the drain bolt)
  • Drain pan (for catching old oil)
  • Clean rag or paper towels
  • Fresh oil (Honda recommends Pro Honda HP4S 10W-30 full synthetic or a quality four-stroke 10W-40 motorcycle oil)
  • Measuring cup (to measure oil amount)
  • Funnel (for refilling oil)
  • Gloves (optional for cleanliness)

Oil Type and Capacity

  • Recommended oil:– Pro Honda HP4S 10W-30 full synthetic or other motorcycle-specific oil
  • Capacity:– Approximately 0.6 quarts (19 ounces or around 0.55 liters)

Preparation Steps

  • Start the engine and let it idle for a couple of minutes. Warming up the oil helps it flow out more completely.
  • Shut the engine off and ensure the bike is on a stable, level surface, using the bike's stand.

Step-by-Step Oil Change Instructions

  1. Remove Filler Cap/Dipstick
    • Unscrew the oil filler cap/dipstick (located on the right side of the engine) to allow air to flow and help old oil drain quicker.
  2. Locate the Oil Drain Bolt
    • Under the right side of the engine, find the 17mm drain bolt. Do not remove any bolts on the opposite side that might have springs or screens.
  3. Drain the Old Oil
    • Position the drain pan under the drain bolt.
    • Use the 17mm wrench to carefully loosen and remove the drain bolt. Be careful—oil may be hot.
    • Allow the oil to fully drain. Tilt the bike upright briefly to get all remaining oil out.
  4. Replace and Tighten the Drain Bolt
    • After oil has drained completely, clean the drain bolt and threads with a rag.
    • Reinstall and tighten the drain bolt securely (do not overtighten).
  5. Add Fresh Oil
    • Place a funnel in the filler hole. Pour in approximately 0.6 quarts (19 ounces) of new oil.
    • Use a measuring cup for accuracy, as too much or too little oil can harm the engine.
  6. Check the Oil Level
    • Insert the dipstick without screwing it in, then withdraw and check the oil level. Add more oil if necessary, but do not overfill.
  7. Finalize – Dispose of Old Oil
    • Install the oil cap/dipstick and wipe away any spills.
    • Start the bike and let it run for 1–2 minutes. Shut off the bike and recheck the oil level, topping off if needed.
    • Properly dispose of the used oil at a recycling facility or auto parts store—never pour it down the drain.

Model-Specific Call-Outs for the 2007 Honda CRF70F

  • This engine is known for its simplicity and reliability. It does not have an oil filter; just a drain bolt to remove for draining oil.
  • Only remove the 17mm drain bolt under the right side of the engine. There may be another bolt on the opposite side with a screen—do not remove this for a normal oil change, as it is a part of the oil pump system and only needs service during a complete engine teardown.
  • Honda recommends checking the dipstick without screwing it in when measuring oil level.
  • Allowing the engine to idle for a few minutes after filling and before rechecking ensures the oil is properly distributed for an accurate level reading.
  • Using high-quality oil like Pro Honda HP4S can help maximize clutch performance; both synthetic and conventional oils are suitable if they meet Honda's specs.
  • The CRF70F takes just over half a quart of oil—adding too much can cause leaks or engine issues, so measure carefully.

Final Tips and Reminders

  • Regular oil changes are typically recommended every 10–15 hours of riding or after every other ride under severe conditions.
  • Keep records of oil changes for future bike maintenance and resale value.
  • Never skip checking the oil level after the engine has run—they can settle and give a more accurate reading once hot oil circulates.

Changing the oil yourself on a 2007 Honda CRF70F is straightforward and rewarding, helping your dirt bike stay in top condition for every adventure. MotoSport.com supports every rider with expert guides and the best selection of Honda-approved oils and parts.

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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.