How to Change the Coolant in a 2022 Honda CRF300L ABS

Shop parts for a 2022 Honda CRF300L ABS Dirt Bike.

Routine coolant changes are vital for keeping your 2022 Honda CRF300L ABS running coolespecially when tackling rough trails or long-distance rides. The liquid-cooled, 286cc single-cylinder engine relies on quality coolant to prevent overheating and maintain peak performance throughout its life– a major reason to stay on top of your maintenance schedule and use Honda-recommended fluids. Here's how to change the coolant safely, along with model-specific tips every CRF300LA owner should know.

What You'll Need

  • New coolant compatible with aluminum motorcycle radiators (consult your owner's manual for specs)
  • Cooled-down 2022 CRF300L ABS
  • 5mm hex key
  • Phillips screwdriver
  • Drain pan
  • Rags for cleanup
  • Funnel
  • Proper container for old coolant
  • Gloves (recommended)

Instructions: Changing the Coolant

  1. Allow engine to cool completely.
    Never open the radiator cap when hot. Wait until the cylinder head is cool to touch to prevent burns or injury.
  2. Remove right side fairing.
    Use your 5mm hex key to remove the visible screws holding the right side fairing. Be gentle—the panel has Velcro and several plastic pins near the radiator. Locate the plastic pins and press the centers with a hex key or screwdriver until you hear a distinct click. Push the pin out, then pull the side cover gently off–repeat for all fasteners on this side.
  3. Locate drain bolt and radiator cap.
    The coolant drain bolt is found on the lower portion of the water pump (right side, near your footpeg). Place your drain pan underneath the bolt.
  4. Open radiator cap.
    Turn the radiator cap slowly to relieve residual pressure, then remove it.
  5. Remove drain bolt and drain old coolant.
    Using your wrench, loosen and remove the drain bolt (and maybe the small sealing washer). Allow coolant to flow fully into the pan. If your CRF300LA has a coolant overflow reservoir, open its cap and remove the old fluid as well.
  6. Reinstall drain bolt.
    Once flow stops, clean the drain bolt and washer. Reinstall and torque according to your owner's manual.
  7. Refill with new coolant.
    Use a funnel to pour fresh coolant into the radiator up to just below the filler neck. Top off the reservoir to the max fill line.
  8. Bleed the cooling system.
    Start the engine and let it idle for a few minutes with the radiator cap off (but watch for splashing). Squeeze both radiator hoses a few times to release air bubbles. As coolant settles, top off as needed.
  9. Reinstall radiator cap and fairings.
    Secure the radiator cap tightly. Replace the right side fairing by reversing removal steps. Ensure all pins, screws, and Velcro are seated.
  10. Check for leaks and test ride.
    Run the engine, inspect for drips, and confirm coolant in the reservoir stays at the full line after a short ride.

Special Tips for CRF300L ABS Owners

  • ABS brake routing is close to the right radiator shroud—use caution when handling plastic pins and panels near ABS sensor wiring.
  • Honda's liquid-cooled engine is designed for extreme reliability, but overheating from low coolant can cause severe engine damage or compromise the anti-lock brake system's electronics.
  • If you see repeated overheating warnings, consult your Honda dealer—especially since the ABS version has more electronics behind the panels that should be kept dry and cool at all times.

Disposal Reminder

Coolant is toxic. Always dispose of old coolant at an approved recycling center—never pour it down a drain.

Final Thoughts

Changing coolant on your 2022 Honda CRF300L ABS is straightforward if you follow these steps carefully, use the correct supplies, and handle the ABS system's added components with care. Routine cooling system maintenance keeps your dual sport adventure-ready and extends engine life.

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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.