How to Change the Coolant in a 2022 Honda CRF250R

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Routine maintenance is key for the high-performance 2022 Honda CRF250R, and changing your coolant is essential for protecting your engine under demanding conditions. Honda recommends checking the coolant before each ride and changing it at intervals outlined in your owner manual, typically every two years or more frequently if you ride hard or race.

What You Need to Know About the 2022 CRF250R

  • Coolant Capacity: Draining the system will require about 0.95 liters (1.00 US qt), and if the system is fully disassembled, it holds 1.02 liters (1.08 US qt) of coolant.–
  • Coolant Type: Always use a high-quality silicate-free coolant designed for aluminum engines. Avoid mixing coolant types unless fully flushing the system.
  • Special Components: The CRF250R uses an air bleed bolt and O-ring on the left radiator tank to eliminate air pockets when refilling the system, ensuring consistent cooling performance.–
  • Panel Access: Minimal removal of bodywork is required, but be sure to reinstall panels and fasteners to their specified torque values.–

Required Tools & Supplies

  • Silicate-free coolant
  • Drain pan
  • Basic hand tools (ratchet, 8mm and 10mm sockets, Phillips screwdriver, etc.)
  • New O-ring for the air bleed bolt (recommended)
  • Clean rags
  • Funnel
  • Protective gloves and eye protection

Step-by-Step Coolant Change Procedure

  1. Preparation:
    • Make sure the engine is completely cool before starting—opening the radiator cap when hot may cause scalding fluid to spray out.–
    • Support the bike upright on a secure stand.
    • Remove the seat and left side radiator shroud bolts to access the radiator cap and drain bolt if necessary.–
  2. Drain Old Coolant:
    • Place a drain pan beneath the water pump area.
    • Remove the radiator cap slowly to relieve any pressure.
    • Locate and loosen the coolant drain bolt (usually found at the bottom of the water pump or on the side of the engine). Let all coolant drain out completely.
  3. Flush the System (Optional, but Recommended):
    • If switching coolant types or as preventive maintenance, flush with distilled water. Reinstall the drain bolt, fill with distillate, run the engine briefly (with the radiator cap on loosely), then drain again to remove residue.
  4. Install New Washer and Bolt:
    • Replace the drain bolt washer if needed, and torque the bolt to specification.
  5. Adding Coolant:
    • With the bike upright, fill the radiator slowly to the top with new coolant.
    • Remove the air bleed bolt and O-ring on the left radiator upper tank. Add coolant until it escapes air-free from the bleed bolt opening, then reinstall and torque the bleed bolt with a fresh O-ring.–
  6. Remove Trapped Air:
    • Lean the bike about 20° left and right to help bubbles rise.
    • If needed, briefly start the engine to help circulate coolant, topping off as pockets burp out. Never let the system run dry or un-capped.–
  7. Finalize & Inspect:
    • Replace the radiator cap securely.
    • Reinstall any shrouds or seat removed.
    • Wipe any spilled coolant from surfaces.
    • After the next ride, recheck the coolant level and inspect for leaks.

Pro Tips for the 2022 CRF250R Owner

  • A small loss of coolant (up to 2 US oz) over time is normal. Greater loss indicates a leak that should be inspected.
  • Only open the radiator or overflow cap when the engine is cold.
  • Use only fresh, uncontaminated coolant. Never reuse fluid once drained.

Keep your Honda CRF250R running strong in all conditions by keeping the cooling system in top condition. Ready to upgrade your maintenance routine or need new parts? Shop parts for a 2022 Honda CRF250R Dirt Bike.

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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.