How to Change the Coolant in a 2013 Honda CRF250X

Shop parts for a 2013 Honda CRF250X Dirt Bike.

Maintaining your cooling system is crucial for the performance and longevity of your 2013 Honda CRF250X. This model features a liquid-cooled, single-cylinder engine designed for off-road riding–proper coolant care helps it stay at optimal temperature, especially under demanding trail and track conditions.

Here is an exclusive MotoSport step-by-step guide to changing the coolant on your 2013 CRF250X:

Tools & Supplies Needed

  • New coolant (50/50 premixed silicate-free, ethylene glycol based)
  • Drain pan
  • 8mm and 10mm sockets/wrenches
  • Ratchet
  • Phillips screwdriver
  • Funnel
  • Clean rags
  • Distilled water (for flushing)
  • Replacement crush washer (recommended)
  • Gloves & safety glasses

Step-by-Step CRF250X Coolant Change Procedure

  1. Ensure the engine is completely cool before beginning. Never remove the radiator cap if the bike is warm–serious burns can result.
  2. Remove the seat and side panels for better access. On the 2013 CRF250X, simply remove the two seat bolts, then the side panel bolts and collars. Set parts aside safely.
  3. Remove radiator shrouds and, if needed, the tank. This allows clear access to the radiators and hoses. Turn off the fuel valve if removing the tank.
  4. Place a drain pan under the water pump area. Remove the radiator cap to release system pressure
    .
  5. Locate and remove the coolant drain bolt on the water pump cover using an 8mm socket. Remove the bolt and crush washer, draining old coolant into the pan. Loosen the radiator cap if you did not in Step 4 for a steady flow.
  6. Disconnect the siphon hose from the coolant overflow (reserve) tank and drain the excess coolant. Rinse the tank with distilled water if necessary.
  7. Once empty, flush the system by pouring clean distilled water into the radiator fill neck until clear water drains out the lower pump. Reinstall the drain bolt with a new crush washer, torque to Honda specs.
  8. Reconnect the reserve tank hose.
  9. Pour new coolant slowly into the radiator fill neck, filling to the top. Do not cap yet. Gently rock the bike side to side 15–20 degrees to release air bubbles. Repeat until the coolant level is steady.
  10. Install the radiator cap securely.
  11. Fill the overflow tank up to the minimum line–do not overfill.
  12. Start the engine and let it idle for 2–3 minutes. Snap the throttle a few times to help purge trapped air from the system.
  13. After the engine cools, check the overflow tank again. Add coolant if needed to bring the level between minimum and maximum marks.
  14. Inspect for leaks at the drain bolt, hoses, and radiator cap.
  15. Reinstall plastics, shrouds, and seat securely.

2013 CRF250X Coolant & Cooling Notes

  • This model has robust, dual radiators to manage hot trail and woods conditions. Overheating is rare unless mud blocks the radiators or coolant neglect occurs.
  • The 250X uses a reservoir tank–keep an eye on its level after hard rides.
  • Use only silicate-free coolant to preserve the lifespan of water pump seals and alloy internals.
  • Replace coolant every 2 years or after heavy race seasons for best performance.

Proper cooling maintenance on your 2013 Honda CRF250X ensures long engine life and consistent power output–and helps you conquer any trail or trail ride with confidence.

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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.