How to Change the Coolant in a 2011 GAS GAS TXT PRO 250

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Changing the coolant on your 2011 GAS GAS TXT PRO 250 is a key maintenance task that ensures your trials bike continues to deliver optimal performance while protecting the engine from overheating and corrosion. This guide is designed specifically for GAS GAS owners and highlights unique tips for your model.

Why Coolant Maintenance Matters on the TXT PRO 250

The TXT PRO 250 uses a liquid-cooled, two-stroke engine that relies on fresh coolant for heat dissipation and internal protection. Beyond overheating, neglected coolant risks internal corrosion – a concern for all aluminum engine components, seals, and the water pump. Prolonged use of old coolant can also cause internal deposits, reducing system efficiency and leading to premature wear or even mechanical failure.

Tools and Materials You'll Need

  • Fresh motorcycle-specific coolant (silicate-free, premixed or mixed per bottle instructions)
  • Basic hand tools: screwdrivers, sockets, pliers
  • Drain pan
  • Funnel
  • Gloves and eye protection
  • Clean rags

Proprietary Coolant Change Guide for the 2011 GAS GAS TXT PRO 250

  1. Preparation
    • Begin with the engine completely cold to prevent scalding injuries and make the radiator safe to open.
    • Lift the bike with a stand for better access to the frame and cooling components.
  2. Accessing the Radiator
    • On the TXT PRO 250, the radiator cap is located under the fuel tank. Remove the tank by disconnecting the fuel line and any mounting bolts as needed.
    • Wipe around the radiator cap before removing to prevent contaminating the system.
  3. Draining the Old Coolant
    • Position your drain pan under the lowest coolant hose attachment or the water pump (lowest point on the right side of the engine).
    • Loosen the lower hose clamp or remove the water pump plug, allowing coolant to fully drain.
    • Squeeze the hoses gently to help clear residual coolant.
    • Dispose of old coolant safely according to local environmental regulations.
  4. Flushing (Optional, Highly Recommended)
    • Briefly flush with distilled water for a cleaner system. Reinstall the hose/plug, fill with distilled water, and run the engine for just a few moments. Drain completely before proceeding.
  5. Refilling with Fresh Coolant
    • Reattach all hoses and secure their clamps.
    • Use a clean funnel to pour new coolant into the radiator neck. Fill to just below the cap's sealing base, allowing air to escape as you go.
    • Gently squeeze the main hoses to help purge trapped air bubbles from the system.
  6. Bleeding the Cooling System
    • Leave the cap off and start the engine. Let it idle until warm, further purging air. Top up the coolant if the level drops.
    • Once the level stabilizes and no bubbles appear, reinstall the radiator cap securely.
  7. Final Steps
    • Reinstall the fuel tank and double check all coolant connections for leaks.
    • After a test ride and full cool down, recheck coolant level at the radiator. Repeat the bleeding procedure as needed.

Important Notes for TXT PRO 250 Owners

  • The 2011 TXT PRO 250 uses a compact, high-performance radiator system with a small coolant volume. Never overfill – always fill to the base of the filler neck, never past the overflow tube.
  • GAS GAS recommends checking coolant every few rides, especially in dusty or hot conditions, to catch any minor leaks before they become an issue.
  • Always use silicate-free coolant to prevent water pump seal damage and internal corrosion.
  • Inspect hoses for cracks and softness at every coolant change. Replace aging or damaged hoses with quality parts from MotoSport for reliability.
  • After coolant changes, monitor the coolant reservoir after heat cycling. Minor drops in level are normal as any remaining air escapes. Re-top as necessary. If coolant consumption persists, inspect for leaks or gasket issues.–

Maintaining Peak Performance

By following these model-specific steps, you'll keep your 2011 GAS GAS TXT PRO 250 running cool, responsive, and ready for technical trials courses or play. Scheduled coolant changes are as critical as fuel & air for your bike's health and peace of mind on every ride.How to Change the Coolant in a 2011 GAS GAS TXT PRO 250 Shop parts for your ride now!

Routine coolant changes on your 2011 GAS GAS TXT PRO 250 are vital for maintaining engine temperature, protecting engine components, and ensuring reliable operation during tough trials. The compact liquid-cooled two-stroke system is especially sensitive to proper fluid maintenance. Follow these proprietary MotoSport steps for guaranteed results.

Required Tools & Supplies

  • Pre-mixed motorcycle coolant (silicate-free, ethylene glycol base is recommended)
  • Drain pan
  • Screwdrivers and pliers
  • Ratchet and sockets
  • Clean rags and safety gloves
  • Funnel

Step-by-Step Coolant Change Guide

  1. Let the Engine Cool
    The cooling system is pressurized when hot—work only on a fully cooled engine.
  2. Remove the Fuel Tank
    On the 2011 TXT PRO 250, the radiator cap is under the tank. Turn off the petcock, disconnect the fuel line, and unbolt the tank for clear access.
  3. Open the Radiator Cap Slowly
    Carefully remove the radiator cap to relieve any remaining pressure.
  4. Drain the Old Coolant
    Locate the lowest coolant hose (typically on the right near or at the water pump). Loosen the hose clamp or remove the coolant drain bolt if equipped.

    Allow fluid to fully drain into your pan. Squeeze main hoses to expel trapped fluid.
  5. Flush if Needed
    If the coolant was heavily soiled, run distilled water through the system before refilling, cycling it briefly and draining completely.
  6. Reinstall the Drain Bolt / Hose
    Ensure everything is tight and clean. Replace any questionable hoses now.
  7. Refill with Fresh Coolant
    Slowly pour coolant into the radiator to just below the neck. Gently squeeze coolant hoses to help release trapped air. Wait for air bubbles before topping off.
  8. Bleed the System
    Start the engine with the radiator cap off, letting it idle and warm up briefly. Turn off before overheating — top off fluid as air purges from the system.

    Once coolant stabilizes and no more bubbles rise, refit the cap securely.
  9. Reinstall the Fuel Tank
    Reconnect the fuel line, fasten the tank, and ensure all hoses are routed properly.
  10. Final Check
    After a full cool-down, inspect coolant level at the radiator. Top up if needed.

    Check for leaks after the first ride and monitor the level for the next few heat cycles.

Important Notes for TXT PRO 250 Owners

  • Never open the cooling system when hot. The pressurized system can spray scalding liquid.
  • Use only silicate-free motorcycle coolant–auto coolants can damage seals or cause deposits.
  • The system is small. Do not overfill. Excess fluid may blow out the overflow tube.
  • Check hoses for signs of aging—replace as a preventative step for reliability.
  • Unusual, persistent coolant loss after changing may signal a head gasket or water pump problem. Monitor levels after a full heat cycle and address persistent drops immediately.

Following these proprietary MotoSport steps keeps your 2011 GAS GAS TXT PRO 250 cool and performing its best, whether you're tuning for trials competition or routine trail work. Regular coolant checks and changes are essential for a long-lasting, trouble-free 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.