How to Change the Coolant on a 2019 Husqvarna TC250

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Changing the coolant in your 2019 Husqvarna TC250 is an essential part of maintaining peak performance and longevity for your two-stroke engine, especially given the high-revving nature and race-focused engineering of this model. This step-by-step guide will ensure a thorough job, keeping you on the track with optimal thermal management.

What You'll Need

  • New coolant (manufacturer-recommended or high-quality motocross-specific)
  • Drain pan or suitable container
  • Socket wrench set (8mm or similar size as required)
  • Shop towels/rags
  • Funnel
  • Gloves and safety glasses

Instructions

  1. Preparation
    • Ensure the engine is completely cool to prevent burns from hot coolant or pressure in the cooling system.
    • Position the bike upright on a stand to keep it level.
  2. Drain the Old Coolant
    • Place your drain pan under the water pump cover on the right side of your TC250.
    • Remove the radiator cap to allow air into the system for faster draining.
    • Remove the designated coolant drain screw from the water pump cover (typically an 8mm bolt) to begin draining. Allow coolant to completely drain into the pan.
    • If you want a thorough flush, lean the bike side-to-side gently and remove the lower radiator hose if possible.
  3. Flush the System (Optional but Recommended)
    • If the old coolant was contaminated or if your bike has overheated recently, flush the system with distilled water. Pour in distilled water, replace the drain bolt, run briefly, drain again, and repeat until clean.
  4. Reinstall Drain Bolt
    • Wipe the drain bolt and sealing surfaces clean. Reinstall the bolt and tighten securely (do not overtighten).
  5. Add New Coolant
    • Position a funnel in the radiator fill neck. Pour new coolant in slowly until the radiator is filled up to the base of the filler neck.
    • Replace the radiator cap.
  6. Bleed Air from the System
    • Start the engine and let it idle briefly with the radiator cap still on. As the bike warms up, gently rock it side-to-side to help any trapped air rise to the top.
    • Shut off the engine, let it cool down completely, then check the coolant level again. Top off as necessary.
    • Also check any overflow tank (if equipped on your model) and top up if needed.
  7. Finishing Up
    • Wipe up any spilled coolant, check for leaks, and dispose of used coolant responsibly.
    • Recheck coolant level after your first ride and top off if needed. Maintaining the correct level is vital for your high-strung TC250 powerplant.

2019 Husqvarna TC250 Owner Tips

  • The 2019 TC250 is a lightweight, high-performance two-stroke without a thermostat or electric fan. Proper coolant level is crucial for preventing overheating–especially under racing conditions.
  • This model's aluminum radiators and magnesium engine case can be sensitive to corrosion. Always use recommended coolant types for aluminum-safe, silicate-free performance.
  • Check hoses and clamps for wear whenever changing coolant. Replace any soft or cracked components immediately for reliability.
  • Dual radiators mean it's important to check both sides for air pockets after filling.

Routine coolant servicing ensures consistent performance and protects your Husqvarna TC250's engine from costly damage—making it a small but fundamental part of your race-ready maintenance program.

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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.