How to Change the Coolant in a 2009 GAS GAS TXT PRO 280

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Changing the coolant in your 2009 GAS GAS TXT PRO 280 is an important part of regular maintenance to ensure optimal engine temperature and performance. Below is an exclusive MotoSport.com guide tailored specifically for your trials bike, highlighting essential steps and special notes unique to this model.

Preparation – Safety First

  • Only work on the cooling system when the engine is completely cool. Opening the radiator cap or draining fluid when hot can result in severe scalding due to high pressure and temperature.
  • Gather the necessary supplies:
    • Lightweight alloy engine-compatible coolant (do not use plain water or car antifreeze)
    • Basic hand tools (Allen keys, socket set, screwdrivers)
    • Drain pan
    • Shop towels

Removing the Fuel Tank (for Access)

  • Close the fuel cock and remove the fuel tube from the tank.
  • Unscrew the front upper Allen screw retaining the tank.
  • Lift the front section and remove the tank completely for full access to the radiator and cooling system.

Draining the Old Coolant

  • Locate the coolant drain bolt at the bottom of the water pump cover or lower radiator area.
  • Place a drain pan underneath and remove the bolt. Allow coolant to fully drain.
  • To speed up draining, remove the radiator cap carefully only after confirming the engine is cool.

Flushing the System (If Necessary)

  • If the removed coolant appears dirty or rusty, flush the system by pouring distilled water through the radiator and allowing it to drain out completely. Repeat until clear.
  • Do not use aggressive flush chemicals as this may damage magnesium or alloy components.

Refilling with New Coolant

  • Reinstall the drain bolt securely.
  • Carefully pour new, lightweight alloy engine-approved coolant into the radiator up to the fill neck.
  • Gently tilt the bike side to side and lightly squeeze radiator hoses to help burp trapped air bubbles.
  • Replace the radiator cap securely.

Check for Leaks – Final Inspection

  • Reinstall the fuel tank and reconnect hoses and fasteners.
  • Start the engine and let it idle for a few minutes. Monitor the coolant level and inspect for leaks.
  • After the engine has cooled again, re-check the coolant and top off if needed.

Special Notes for the 2009 GAS GAS TXT PRO 280 Owner

  • This model uses a lightweight radiator and alloy cooling layout designed for trials; only use coolant with anti-corrosive properties appropriate for magnesium-aluminum engines to avoid internal corrosion.
  • Never bypass recommended coolant change intervals—overheating and internal damage are costly and can often be traced to neglected coolant maintenance.
  • Ensure proper air bleeding; the unique frame configuration can trap pockets of air, resulting in overheating if not purged completely.

For parts and high-quality coolants tailored to your GAS GAS, MotoSport.com offers the full range of maintenance items designed for your 2009 TXT PRO 280. Safe riding!

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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.