How to Change the Coolant in a 2020 GAS GAS TXT RACING 125

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Regularly changing the coolant in your 2020 GAS GAS TXT RACING 125 is critical for optimal engine performance and longevity. The TXT RACING 125 features a high-revving, two-stroke engine and a lightweight frame, making proper cooling maintenance essential for both competitive trials and recreational riding. Here is a step-by-step MotoSport-exclusive guide, tailored specifically to your model:

Prepare Your Tools & Workspace

  • Fresh, manufacturer-recommended coolant (not pre-mixed water)
  • Drain pan large enough to catch coolant
  • Allen wrenches, sockets, and a screwdriver
  • Clean cloths for spills
  • Latex or nitrile gloves (for hand protection)

Step 1: Ensure Safety & Cool Engine

  • Park the TXT RACING 125 on a level surface, using a stand for stability.
  • Allow the engine to cool completely before working on the cooling system–hot coolant can cause burns.

Step 2: Access the Radiator & Reservoir

  • Remove the seat and side panels if necessary to reach the radiator cap and overflow reservoir.
  • Locate the radiator cap at the top of the left or right radiator.

Step 3: Drain the Old Coolant

  • Place a drain pan under the engine, beneath the water pump area.
  • Locate the coolant drain bolt on the water pump cover. On the 2020 TXT RACING 125, this is typically a small bolt at the lowest point of the water pump housing.
    Tip: Double-check the owner's manual for bolt location if unsure.
  • Carefully loosen and remove the drain bolt. Allow all coolant to drain into the pan.
    Note: Some models may require removal of a small copper washer with the drain bolt–replace it if damaged to prevent leaks.

Step 4: Flush the Cooling System (Optional but Recommended)

  • If the old coolant was especially dirty or if it's your first flush, refill the radiator with distilled water, reinstall the drain bolt, and run the engine briefly (1-2 minutes).
    Let the engine cool, then repeat the drain process.

Step 5: Reinstall the Drain Plug

  • Inspect the drain bolt and washer for wear.
  • Reinstall and tighten the bolt to manufacturer specification. Over-tightening can strip the soft aluminum threads.

Step 6: Refill with Fresh Coolant

  • Remove the radiator cap (if you haven't already).
  • Slowly pour in the recommended coolant until the radiator is full. Use a funnel to avoid spills.
  • Fill the overflow reservoir to the indicated MAX line.

Step 7: Bleed the Cooling System

  • To remove air pockets, gently rock the bike side-to-side and squeeze the coolant hoses.
  • Check the manual for a specific bleeder screw; some models have one located near the thermostat or at the top of the cylinder head.
  • Reinstall the radiator cap securely.

Step 8: Final Checks & Clean Up

  • Start the engine and let it idle for several minutes. Monitor coolant level; add more if needed after the engine cools again.
  • Check for leaks around the drain bolt, radiator, hose clamps, and reservoir.
  • Dispose of old coolant responsibly–never pour it down the drain or onto the ground.

What Owners Should Know About the TXT RACING 125

  • This model uses a compact, lightweight radiator and high-output water pump to keep operating temperatures low. Proper coolant capacity and the absence of air in the system are vital for preventing overheating, especially during slow-speed trials riding.
  • Always use a high-quality, motorcycle-specific coolant with anti-corrosive and anti-freeze properties.
  • Coolant change intervals: For the 2020 GAS GAS TXT RACING 125, inspect and change the coolant at least once a year or every 20 hours of heavy use, whichever comes first.
  • Inspect radiator fins for damage and keep them clean of mud for optimal airflow.

Whether you're prepping for your next competition or keeping your TXT RACING 125 running strong through the trails, routine coolant changes are key to reliable performance and engine longevity. For high-quality parts or coolant, shop parts for your ride now!

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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.