How to Change the Coolant in a 2018 Husqvarna TE250i

Shop parts for a 2018 Husqvarna TE250i Dirt Bike.

Routine coolant changes are essential for maintaining the performance and longevity of your 2018 Husqvarna TE250i, especially given the advanced two-stroke fuel injection system and thermally sensitive engine components unique to this model. Follow this proprietary MotoSport guide for an efficient and thorough coolant replacement process.

Essential Tools & Supplies

  • Fresh motorcycle coolant (preferably pre-mixed, or mix concentrate with distilled water per instructions)
  • Socket or wrench set
  • Drain pan
  • Funnel
  • Clean rags
  • Protective gloves

Step-by-Step Coolant Change Procedure

  1. Preparation
    Ensure the motorcycle is on a level surface and the engine is completely cool to avoid burns. Remove the seat and any plastic shrouds that may block access to the radiator.
  2. Release System Pressure
    Slowly remove the radiator cap to relieve any residual pressure in the cooling system. This step is vital to prevent coolant spray loss and ensure a safe work environment.
  3. Drain the Old Coolant
    Place a drain pan under the water pump on the right side of the engine. Remove the drain bolt (commonly found on the water pump cover). Allow the coolant to fully drain from the radiators and engine. Tilt the bike slightly if needed to ensure complete drainage.
  4. Flush the System (Recommended)
    With the drain bolt still removed, pour distilled water into the radiator to flush out any residue, then let it drain. Repeat as needed until the water runs clear. This helps prevent mineral deposits or old coolant contamination in your new fill.
  5. Reinstall the Drain Bolt
    Clean the drain bolt threads, replace the sealing washer if necessary, and torque the bolt securely to factory specification to avoid leaks.
  6. Refill with Fresh Coolant
    Using a funnel, pour the new coolant into the radiator until it reaches the neck of the filler. Ensure you use the recommended type & proper mix ratio for two-stroke bikes to protect the TE250i's unique cooling and fuel injection systems.
  7. Burp the System of Air
    With the radiator cap still off, start the engine and let it run for a few minutes. Occasionally rev and gently rock the bike to help air bubbles escape from the system. Top off the radiator fluid as necessary during this process.
  8. Check & Reassemble
    Once coolant level stabilizes at the filler neck, install and tighten the radiator cap. Fill the overflow reservoir to the indicated level if equipped. Reinstall any removed plastic bodywork.
  9. Disposal
    Dispose of the old coolant safely and in compliance with local environmental regulations.

Special Considerations for the 2018 TE250i

  • The TE250i uses a battery of interlinked radiators designed to maximize cooling. Ensure radiator fins remain straight and clean for optimum airflow and performance.
  • Always use distilled water with coolant concentrate if a pre-mix isn't available to avoid mineral build-up, which can disrupt temperature regulation and fuel injection accuracy.
  • Monitor your coolant after the first ride post-change, as air pockets can settle and require a quick top-off for optimal system function.
  • Never operate the engine with low coolant—the TE250i's two-stroke injection depends on consistent thermal management to run efficiently and prevent internal damage.

With routine coolant service, your 2018 Husqvarna TE250i will continue to deliver top performance on the track or trail. For genuine replacement parts or coolant, MotoSport 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.