How to Change the Coolant in a 2024 Husqvarna TC250

Shop parts for a 2024 Husqvarna TC250 Dirt Bike.

Keeping your 2024 Husqvarna TC250's cooling system in top condition ensures peak performance and long engine life. A coolant change is a straightforward maintenance task you can do at home with just a few tools. Below are step-by-step instructions unique to your TC250, plus tips specific to this modern 2-stroke.

What You Need

  • Fresh coolant rated for off-road motorcycles
  • 8mm socket or wrench
  • Funnel
  • Rag or paper towels
  • Container for old coolant

Preparation

  • Make sure the engine is completely cool before beginning. Hot cooling systems are under pressure and can cause burns when opened.
  • Lift the bike securely so it stands fully upright.

Draining the Old Coolant

  • Remove the radiator cap. This relieves any built-up pressure and helps the system drain completely.
  • Place a drain pan or container under the water pump area, just below the right engine case.
  • Locate the coolant drain screw on the water pump cover (8mm). Loosen and remove the screw to let the old coolant flow out.
    Note: Some models may require you to tilt the bike gently or shift it to the side stand to maximize drainage.

Flushing the System (Optional but Recommended)

  • If you're switching coolant types or want a thorough flush, pour a small amount of distilled water into the radiator. Reinstall the drain bolt, fill with distilled water, let it circulate briefly, then drain again.

Refilling with Fresh Coolant

  • Reinstall the drain screw and torque it to manufacturer specification. Do not overtighten–the water pump cover is sensitive to excessive force.
  • Slowly pour new coolant into the radiator neck using a funnel. Pause periodically to let any trapped air rise out.
  • Once full, check for a bleed screw on the cylinder head or radiator. Loosen gently until air hisses out and a bit of coolant dribbles. Tighten securely when you see coolant only.
  • Fill the radiator fully to the neck and reinstall the cap securely.

Post-Fill Checks

  • Start the engine and let it idle for several minutes with the radiator cap on. Watch the temperature and inspect for leaks.
  • Once cooled again, recheck coolant level and top off as needed.

What's Unique About the 2024 Husqvarna TC250?

  • This model uses a modern 2-stroke liquid-cooled engine with a redesigned frame and improved radiator placement. Routine coolant changes are crucial to prevent overheating, especially on high-output, race-tuned machines like the TC250.
  • Always use coolant specifically safe for magnesium engine parts, common in recent Husqvarna engines, to avoid corrosion.
  • Air pockets can easily get trapped in the cooling system—using the bleed screw is highly recommended for a complete fill.

Proper Disposal

  • Old coolant is toxic. Collect used fluid in a sealed container and deliver it to a motorcycle shop or hazardous waste facility for safe disposal.

With regular coolant changes, your TC250 stays cool under pressure ride after ride.

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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.