How to Change the Coolant in a 2014 Husqvarna TC125

Shop parts for a 2014 Husqvarna TC125 Dirt Bike.

Maintaining your 2014 Husqvarna TC125 ensures maximum performance and reliability on the track or trail. One of the most important and often overlooked maintenance tasks is changing the coolant. Keeping your cooling system in top condition prevents overheating, protects engine components, and extends the life of your dirt bike. Follow the proprietary MotoSport guide below to change the coolant on your bike confidently and correctly.

What You Will Need

  • Fresh, compatible coolant (consult your owner's manual for recommendations specific to 2014 Husqvarna TC125)
  • Drain pan
  • Socket set or wrenches
  • Clean rags
  • Protective gloves & eyewear

Step-by-Step Instructions

  1. Preparation
    • Let the engine and cooling system cool down completely before beginning.
    • Set the motorcycle upright on a flat, horizontal surface for proper draining and leveling of coolant .
    • Remove any plastics or obstacles to easily access the radiator cap and water pump area.
  2. Drain Old Coolant
    • Remove the radiator cap to relieve pressure and allow air into the system .
    • Place the drain pan below the water pump’s drain bolt (find this on the right side, below the water pump cover).
    • Use your socket/wrench to remove the drain bolt carefully . The old coolant should flow freely. If flow seems slow, gently tilt or rock the bike or shift it onto its side stand to encourage draining .
    • Once fluid stops, inspect the drain bolt and its sealing washer for damage; replace if necessary.
  3. Flush System (Recommended)
    • If old coolant is contaminated or you want to maximize cleanliness, flush with distilled water before refilling. Fill the system with distilled water, reinstall the drain bolt, and briefly run the engine. Let the bike cool, then drain again. Repeat if necessary until drained water runs clear. Do not leave plain water in the system.
  4. Refill with New Coolant
    • Ensure the drain bolt is securely installed and tightened.
    • Pour fresh coolant into the radiator neck slowly to prevent air pockets. Fill up to the specified level in your owner's manual .
    • Crack open the small bleeder screw (if equipped, check top of the cylinder head or the highest radiator point) while filling to help trapped air escape. When coolant seeps from the bleed port with no bubbles, close it .
  5. Finalizing & Checks
    • Reinstall and tighten the radiator cap securely. Double-check that all bolts and drain points are snug.
    • Start the engine and let it warm up for several minutes. Watch the temperature and check for leaks around the radiator, hoses, and drain plug.
    • After engine cools, recheck coolant level and top off if needed.

Special Considerations for the 2014 Husqvarna TC125

  • Radiator Cap Pressure: The standard radiator cap on a 2014 TC125 is rated for 1.8 bar (26 psi). Make sure it is maintained in good condition and replaced if faulty, as pressure regulation is critical for preventing overheating .
  • Radiator Fin Care: Inspect radiator fins for mud or damage. Carefully straighten bent fins and clean them for efficient cooling .
  • Environmental/Leave No Trace: Always dispose of old coolant responsibly. Don't pour it down drains or onto the ground. Most automotive stores can recycle engine coolant.
  • Coolant Choice: Select a coolant approved for aluminum engine and cooling components. Using the wrong coolant can result in premature corrosion and costly repairs .

Pro Tips

  • Always allow the engine to cool fully before opening the cooling system to avoid burns .
  • Frequently check your coolant level, especially after heavy rides and in warmer climates.
  • Replacing coolant at least once a year or as part of your seasonal maintenance routine can prolong the life of your 2014 Husqvarna TC125’s engine.

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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.