How to Change the Coolant in a 2022 Husqvarna TC65

Shop parts for a 2022 Husqvarna TC65 Dirt Bike.

Keeping your 2022 Husqvarna TC65 running cool is essential for performance and engine longevity. Flushing and changing the coolant is straightforward thanks to the bike's two-stroke, liquid-cooled design. This MotoSport-exclusive guide walks you through each step, with key notes to watch for with this model.

Why Regular Coolant Changes Matter on the TC65

Coolant removes excess heat and protects the internal engine from corrosion. Fresh coolant is especially important if you race, ride in mud, or store the bike over winter—all relevant for owners of the youth-oriented, competition-ready TC65.

Tools and Supplies Needed

  • Proper coolant (engine ice, Motul Motocool, or OEM spec per your manual)
  • Socket set and wrench
  • Catch pan for old coolant
  • Funnel
  • Shop rags
  • Distilled water (for optional flushing step)
  • Torque wrench (recommended)
  • Flathead screwdriver (if needed for hose clamps)

Step-by-Step Coolant Change Process

  1. Allow engine to cool. Never open the cooling system when hot.
  2. Secure the bike. Stand the TC65 up level on a stand for best drainage.
  3. Remove the radiator cap. Locate and carefully twist off the cap, releasing any remaining system pressure slowly.
  4. Drain the old coolant.
    • Locate the coolant drain bolt by the water pump cover (right side, near lower engine case).
    • Position a catch pan underneath. Remove the drain bolt and let all coolant flow out. Loosen the lower radiator hose if extra drainage is needed.
  5. Optional flush: Pour distilled water into the system, reinstall the drain bolt, and start the engine for a minute to circulate. Shut off, let cool, and drain again for a cleaner result.
  6. Reinstall and torque the drain bolt. Tighten the bolt snugly; if possible, use a new crush washer and torque to spec from your manual (generally around 7–10 Nm).
  7. Refill with coolant.
    • Use a funnel to fill slowly through the radiator neck. The system holds approximately 0.45 liters–check your manual for exact capacity.
    • Fill until visible at the bottom of the filler neck.
  8. Bleed air from the system.
    • Start the TC65 and let it idle (with cap off). Gently rock the bike side to side to help bubbles escape. Top off coolant as needed.
    • The 65cc Husqvarna does not have a separate bleed screw; all air should escape through the fill neck with patience. If the level drops after idling, add coolant and repeat.
  9. Reinstall the radiator cap.
  10. Inspect for leaks. Run to operating temperature, then shut down and check all areas for leaks.

Additional Notes Specific to the 2022 TC65

  • The 2022 TC65 features lightweight aluminum radiators. Avoid overtightening bolts to prevent thread or radiator damage.
  • The stock coolant is premium but can be swapped for high-performance race-certified options when riding hard or in warm climates.
  • If you notice excessive overheating or frothing, check for trapped air (rebleed) and verify the radiator cap is sealing well.
  • Always dispose of old coolant responsibly as it is toxic to people, pets, and the environment.
  • Inspect radiator fins and hoses while you have the plastics off–bent fins or cracked hoses are common on youth bikes and should be addressed to prevent future issues.

Maintenance Frequency

Replace coolant at least once per year or after heavy muddy races. If the TC65 is exposed to sub-freezing temperatures, ensure your coolant protects to at least minus 20 F (–28.8 C).

Keep Your TC65 Running at Its Best

Changing your coolant takes just a few simple steps but pays off with better cooling, safer operation, and maximum reliability for this high-performance youth motocross machine. Take advantage of MotoSport's extensive selection to grab OEM and race-ready coolants, radiators, hoses, and all the maintenance parts you need to keep your Husqvarna TC65 on the track.

Related Shopping Categories

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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.