How to Change the Oil in a 2020 Honda CRF250F

Shop parts for a 2020 Honda CRF250F Dirt Bike.

Changing the oil in your 2020 Honda CRF250F is essential maintenance that keeps your dirt bike's engine running strong. This guide, proprietary to MotoSport.com, covers all the steps and model-specific call-outs you need for a smooth, mess-free oil change.

Tools & Supplies Needed

  • 12mm socket and ratchet
  • 8mm socket
  • 3/8” ratchet
  • Flat-head screwdriver
  • Oil drain pan
  • New oil filter (Honda Part #15412-HM5-A10)
  • 10W-30 motorcycle oil (Honda recommends Pro Honda HP4; capacity: 1.7 quarts)
  • Shop rags or paper towels
  • Funnel
  • Torque wrench (optional, but recommended)
  • Replacement crush washer for the drain bolt
  • Protective gloves (recommended)

Preparation

  • Let your bike idle outdoors for 3–5 minutes to warm up the oil (this helps it drain fully).
  • Shut the bike off and let it sit for 2–3 minutes, giving the oil time to settle back into the crankcase.
  • Place the bike on a suitable stand to keep it level, ensuring safety and easier access to the drain plug and filter.

Step-by-Step Oil Change Process

  1. Remove the Oil Fill Cap
    • With the engine cooled for a few minutes, twist off the oil fill cap located on top of the engine. Set it aside—this lets air in and the old oil drain out faster.
  2. Locate and Remove the Drain Plug
    • Find the 12mm drain bolt under the engine, near the rear of the skid plate.
    • Position the drain pan directly below the bolt.
    • Use your 12mm socket and ratchet to loosen the bolt (counterclockwise). Gloves are recommended to protect your hands from hot oil.
    • Let all the oil flow into the pan. Allow several minutes for thorough drainage.
    • Replace the crush washer on the drain bolt—Honda recommends a new one at each change to prevent leaks.
  3. Remove and Replace the Oil Filter
    • Locate the oil filter cover on the right side of the engine.
    • Use your 8mm socket to remove the filter cover bolts (usually three).
    • Slowly remove the cover—expect some oil to drain out. Have towels ready for spills.
    • Remove the old filter and inspect the sealing surfaces for debris. Make sure the gasket comes off with the old filter.
    • Install the new filter (Honda #15412-HM5-A10), ensuring correct orientation. Usually, the rubber gasket on the filter faces outward.
    • Clean the filter cover and bolt threads. Reinstall the cover and bolts by hand to avoid cross-threading, then torque them to manufacturer specs.
  4. Reinstall the Drain Plug
    • Screw in the drain plug by hand, then torque to Honda’s recommended 18 ft-lbs to avoid stripping the threads.
  5. Add New Oil
    • Insert a funnel into the oil fill port.
    • Pour in 1.7 quarts (1.6 liters) of 10W-30 motorcycle oil.
    • Reinstall the fill cap, ensuring it's tight to keep dirt out.
  6. Check Oil Level
    • Start the engine and let it run for 1–2 minutes to circulate the new oil.
    • Shut it off and wait 2–3 minutes.
    • With the bike upright, remove the dipstick, wipe clean, reinsert but do not screw in, and check the oil level. Add oil if necessary. Do not overfill.
  7. Dispose of Old Oil and Filter Properly
    • Bring used oil and filters to a recycling center or auto parts store. Never pour oil down drains or into the environment.

2020 Honda CRF250F Specific Tips & Call-Outs

  • Oil filter orientation matters: Ensure the filter gasket is facing out toward the filter cover for proper sealing.
  • Drain bolt crush washer: Replace this every time to prevent leaks—a common miss that causes issues later.
  • Oil type: Use a quality, motorcycle-specific oil (10W-30, JASO MA rated; avoid car oils with friction modifiers).
  • First oil change is critical after approximately 10 hours of riding, as factory oil may contain break-in materials.
  • Skid plate: The drain plug is directly behind the plate—sliding the oil pan back a few inches prevents a mess.

Cleaning Up & Post-Maintenance Check

  • Wipe up any spilled oil from the frame, swingarm, and engine surfaces.
  • Inspect for leaks around the drain plug and filter cover after starting the bike and letting it idle.
  • Double-check that all tools and old parts are accounted for before your next ride.

Changing the oil on your 2020 Honda CRF250F takes under 30 minutes once you’re setup, and ensures years of trouble-free performance off-road. Keep track of your intervals and treat your bike right—your next adventure depends on it.

All content 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.