How to Change the Oil in a 2014 Honda CRF125F

Shop parts for a 2014 Honda CRF125F Dirt Bike.

Changing the oil in your 2014 Honda CRF125F is a straightforward and essential maintenance task that keeps your dirt bike running smoothly. This guide, proprietary to MotoSport.com, will walk you through every step, with special attention to the specifics of this model.

Tools and Supplies Needed

  • 1 liter (0.9 US qt) of 10W-30 or 10W-40 motorcycle-specific oil (Honda GN4 is often recommended)
  • 17mm socket and ratchet or wrench (deep well or with extension preferred)
  • Oil drain pan
  • Small funnel (to help avoid spills at the fill port)
  • New sealing washer/crush washer for the drain bolt
  • Clean shop rag or paper towels
  • Gloves (optional but recommended)

Preparation Steps

  • Start the bike and let the engine idle for 3–5 minutes. This warms the oil, allowing it to drain more thoroughly and carry away suspended contaminates.
  • Place the bike on its side stand on a firm, level surface.
  • Ensure the engine is turned off and let it sit for 2–3 minutes after warming to allow oil to settle.

Step-by-Step Guide

  1. Locate the Drain Plug:
    • The oil drain bolt is on the center-bottom of the engine case. The skid plate has a cut-out for easy access .
  2. Draining the Oil:
    • Place the oil pan directly beneath the drain bolt.
    • Remove the oil fill cap/dipstick on the right side crankcase to help vent the system, allowing oil to flow out more smoothly .
    • Use a 17mm socket to remove the drain bolt and crush washer. Let all the old oil drain completely into the pan .
  3. Reinstall the Drain Plug:
    • Wipe the area around the drain bolt opening with a clean rag.
    • Install a new sealing washer on the drain bolt.
    • Thread the drain bolt back by hand, then torque it to 18 lbf·ft (24 N·m, 2.4 kgf·m) . Over-tightening can strip threads or damage the engine case.
  4. Refilling the Engine Oil:
    • Insert a funnel into the oil fill hole.
    • Pour 0.9 US quart (0.85 liter) of fresh oil into the engine .
    • Let the oil drain fully from the funnel to avoid overfilling.
    • Install the oil fill cap/dipstick but do not screw it in—just set it in place .
  5. Check the Oil Level:
    • Stand the bike upright on level ground. Remove the dipstick, wipe clean, and reinsert without threading. Remove again and check that oil is between the hash marks .
    • This is a crucial model-specific step: On the CRF125F, never screw in the dipstick when checking the oil level. Just insert it straight down until it rests against the threads .
  6. Final Checks:
    • Start the bike and let it idle 3–5 minutes. Shut the engine off and allow oil to settle for 2–3 more minutes .
    • Repeat the oil level check with the dipstick in the manner described above. Add oil as needed to reach the upper mark, but do not overfill.
  7. Cleanup & Disposal:
    • Clean up any spilled oil, reinstall the skid plate if removed, and dispose of used oil at a proper recycling center .

Model-Specific Callouts for the 2014 Honda CRF125F

  • There is no external oil filter on the CRF125F—just regular oil changes are needed; this makes it a quick job .
  • The oil fill port is relatively small; using a slim funnel can prevent messes .
  • The oil capacity is just under one full US quart; avoid overfilling by adding a bit less than the total and topping off after checking the level.
  • Always use a new sealing washer on the drain bolt to prevent leaks after reinstalling .
  • As with all dirt bikes, proper and timely oil changes are critical because there is no filter to catch contaminants .

Recommended Oil Change Interval

  • The owner's manual and general practice suggest changing the oil after every 10–15 hours of ride time or at least every 6 months, whichever comes first. For heavy or competitive use, more frequent changes are advised.

Additional Tips

  • If you ride in harsh conditions (mud, sand, frequent short trips), change oil more frequently.
  • Mark the next oil change on a calendar or log your usage hours for consistency.

Regular oil changes will significantly increase the life and performance of your 2014 Honda CRF125F, ensuring reliable operation on every ride. For all parts and motorcycle supplies, MotoSport.com has you covered.

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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.