How to Change the Oil in a 2009 Honda CRF70F

Shop parts for a 2009 Honda CRF70F Dirt Bike.

Changing the oil in your 2009 Honda CRF70F is a straightforward yet vital maintenance task that ensures your dirt bike runs smoothly and efficiently. This step-by-step guide, proprietary to MotoSport.com, covers all you need to know—tools, instructions, recommended oil volumes, and model-specific notes—so you can confidently perform an oil change at home.

Tools and Materials Needed

  • 17mm socket or wrench (to remove the drain bolt)
  • Drain pan (for old oil)
  • Clean rags or shop towels
  • Funnel (optional, for easier filling)
  • Recommended oil: 10W-40 four-stroke motorcycle oil (Honda HP4S full synthetic or equivalent is preferred)
  • Fresh oil: 0.6 quarts (19 ounces) for a 2009 CRF70F
  • Torque wrench (optional but recommended for reinstalling the drain bolt)
  • Gloves (for cleanliness and safety)

Preparation

  • Warm up the engine by running it for 2–3 minutes. Warm oil drains faster and more completely.
  • Ensure the bike is on a firm, level surface and that the engine is off before starting the procedure.
  • Clean around the oil filler cap/dipstick, which is located on the right side of the engine, to prevent debris from falling in.

Step-by-Step Instructions

  1. Remove the Oil Filler Cap/Dipstick
    • Unscrew and remove the oil filler cap/dipstick. Set it aside somewhere clean.
  2. Drain the Old Oil
    • Place a suitable drain pan under the engine–s drain bolt.
    • Locate the correct drain bolt on the bottom right side of the engine. It is a 17mm bolt. (Be aware: There is an additional bolt on the opposite side containing a spring and piston—do not remove this; only remove the correct 17mm drain plug.)
    • Using your 17mm wrench or socket, carefully loosen and remove the drain bolt. Allow the oil to drain out completely, gently tilting the bike from side to side if necessary to expel all old oil.
    • Once the oil stops dripping, wipe the area clean and carefully reinstall and hand-tighten the drain bolt. If using a torque wrench, tighten to manufacturer–s specification (typically around 18 ft-lb or 24 Nm, but double-check your manual for accuracy).
  3. Refill with Fresh Oil
    • Insert a funnel into the oil fill port. Pour in 0.6 quarts (19 ounces) of recommended motorcycle oil (Honda HP4S 10W-30 or 10W-40 is preferred, but other high-quality four-stroke oils are acceptable).
    • Do not overfill. Use the dipstick to check the oil level: seat (but do not screw in) the dipstick, remove it, and verify that the oil is between the upper and lower marks on the stick.
    • If needed, add small increments of oil and re-check until the proper level is reached.
  4. Start and Run the Engine Briefly
    • Start the bike and let it idle for approximately 3–5 minutes to circulate the fresh oil through the engine.
    • Check immediately for any leaks at the drain bolt.
    • Turn the engine off and wait 2–3 minutes for oil to settle.
    • Re-check the oil level as before, adding or removing oil if necessary. Remember to seat the dipstick but not screw it in when measuring.
  5. Final Steps
    • Once the oil level is correct, securely tighten the dipstick/cap.
    • Properly dispose of old oil at a recycling facility or auto parts store accepting used oil.
    • Wipe down your tools and the area around the engine.

Model-Specific Tips and Call-Outs for the 2009 Honda CRF70F

  • Oil capacity for the 2009 CRF70F is 0.6 quarts (19 oz., approx.), which is slightly over half of a standard U.S. quart container.
  • The oil drain bolt is 17mm; double-check you are removing the right one. Do not confuse it with other bolts on the engine case, particularly the one on the left which contains a spring and a perforated piston—removing the wrong bolt can lead to unnecessary complications.
  • Honda recommends Pro Honda HP4S full synthetic oil for longevity and performance, but high-quality conventional 10W-40 motorcycle oil is also acceptable if preferred.
  • Always gently seat the dipstick (do not screw it in) when checking oil level both before and after running the engine—this is specific to Honda CRF small-bore engines.
  • After your first short ride following the oil change, re-check the oil level and top up if necessary.
  • There is no oil filter on the CRF70F–the oil change is simply a drain-and-refill job, making it one of the easiest DIY services on this bike.

Quick Reference Table for 2009 Honda CRF70F Oil Change

Spec Value
Oil Type 10W-40 or 10W-30 Four-Stroke Motorcycle Oil
Oil Capacity 0.6 Quarts (19 Ounces)
Drain Bolt Size 17mm
Oil Filter None
Recommended Brand Pro Honda HP4S Full Synthetic

Conclusion

Changing the oil on your 2009 Honda CRF70F is quick and essential for reliable operation and engine longevity. If you follow these clear, MotoSport.com–approved steps, and use quality oil, your CRF70F will be ready for action on the trail or the track.

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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.