How to Change the Oil in a 2024 Honda CRF125F

Shop parts for a 2024 Honda CRF125F Dirt Bike.

Keeping your 2024 Honda CRF125F running at its peak requires regular oil changes. Fortunately, this maintenance task is straightforward and essential, especially since the CRF125F does not have an oil filter, making frequent oil changes critical for engine longevity. This guide, proprietary to MotoSport.com, will take you step-by-step through the process, highlight specific details for this model, and ensure you have a seamless experience.

Tools and Materials Needed

  • 1 quart (0.9 qt/850ml) of motorcycle-specific 10W-30 or 10W-40 oil (such as Honda GN4 or Shell Rotella T6)
  • 17mm socket (deep well or with extension recommended)
  • Socket wrench
  • Inch-pound or foot-pound torque wrench
  • Drain pan
  • New sealing/crush washer for the oil drain bolt
  • Funnel (optional, but helps minimize spills)
  • Shop rags or paper towels
  • Service stand or something to keep the bike level

Important Model-Specific Call-outs

  • No Oil Filter:– The CRF125F (including the 2024 model) is not equipped with an oil filter, so frequent oil change intervals (every 10 hours of riding or as recommended by Honda) are more important than ever

    .
  • Oil Capacity:– The correct oil volume is 0.9 US quarts (850 ml) after a standard drain and refill

    . If performing service after major engine work, up to 1 liter may be needed

    .
  • Checking Oil Level:– When checking oil, do NOT screw in the dipstick. Rest the dipstick on the threads to check the correct level

    .
  • Torque Spec:– The oil drain bolt should be tightened to 18 ft-lb (24 Nm or 216 in-lb)

    .
  • Oil Type:– Always use motorcycle-specific oil designed for wet clutches

    .

Step-by-Step Instructions

  1. Warm Up the Engine
    Run the engine for 3-5 minutes to warm the oil. This thins the oil, helping it drain completely.
    Tip: Never drain oil from a cold engine, as thicker oil can leave behind contaminants in the crankcase.
  2. Secure the Bike
    Place the bike upright and level, using a service stand or another means to prevent tipping.
  3. Remove the Filler Cap/Dipstick
    Unscrew the oil filler cap/dipstick to allow the crankcase to vent as oil drains out more efficiently

    .
  4. Position the Drain Pan
    Place a drain pan directly beneath the crankcase drain bolt under the engine.
  5. Remove the Drain Bolt
    Use the 17mm socket to remove the oil drain bolt (located on the underside of the engine).
    Note:– Oil flow may be rapid and hot; use caution.
  6. Replace the Crush Washer
    Once oil is fully drained, discard the old sealing/crush washer and fit a new one onto the drain bolt

    .
  7. Reinstall the Drain Bolt
    Thread the bolt by hand, then tighten with your torque wrench to 18 ft-lb (24 Nm or 216 in-lb)

    .
  8. Add New Oil
    Using a funnel, pour in 0.9 US quart (850 ml) of fresh, motorcycle-specific 10W-30 or 10W-40 oil into the filler opening

    .
    Double-check your owner's manual if unsure of oil grade.
  9. Check Oil Level
    Wait 2-3 minutes for the oil to settle. Rest the dipstick in the threads (DO NOT screw it in), remove, and check the oil level

    . It should be at or near the “full” line.
    Adjust as Needed:– Add small amounts of oil if low; do not overfill.
  10. Start and Recheck
    Start the bike and let it idle for 3-5 minutes, then turn it off and let sit for another 2-3 minutes. Recheck the oil level and top off if necessary

    .
  11. Dispose of Old Oil Properly
    Transfer the used oil to a sealed container and take it to a recycling center. Never pour used oil on the ground or into drains

    .

Pro Tips for Honda CRF125F Owners

  • Change the oil every 10 hours of riding for optimal engine health

    .
  • Record your oil changes;–maintenance logs can help with warranty and resale value.
  • When draining oil, inspect for metal particles on the drain bolt (it is often magnetized). Excess metal may indicate internal wear.
  • Always use a new crush washer under the drain bolt for a proper seal and to prevent leaks

    .
  • Proper torque is critical—not too tight, which could strip threads, nor too loose, which could cause leaks.

Final Notes

  • The 2024 CRF125F is highly user-friendly for routine maintenance.
  • With no oil filter, these bikes rely entirely on frequent oil changes for long engine life.
  • Always use oil labeled for motorcycle use and wet clutches to avoid clutch slippage and excess wear

    .

By routinely following these steps, you'll keep your 2024 Honda CRF125F performing like new, mile after mile. This article is proprietary to MotoSport.com.

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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.