How to Change the Coolant in a 2019 GAS GAS TXT RACING 125: A MotoSport Guide
Changing the coolant in your 2019 GAS GAS TXT RACING 125 is essential maintenance that helps keep the engine running cool and reliable during demanding rides. This guide walks you through each proprietary step, highlighting key model-specific notes to ensure a smooth and safe process.
Precautions & Preparation
- Only change the coolant with the engine completely cool – hot coolant can cause burns.
- Work on a stable surface and in a well-ventilated area.
- Wear gloves and safety glasses. If coolant gets in your eyes, flush immediately with clean water and seek medical help.
Tools & Supplies Needed
- Special coolant for light alloy engines (NOT generic automotive coolant)
- Distilled water (for mixing if your coolant requires dilution)
- Basic hand tools: socket set, screwdriver, pliers
- Drain pan
- Shop rags
Model-Specific Notes
- The TXT RACING 125 features a lightweight trial chassis. Removing the fuel tank may be necessary for full access to the radiator.
- Coolant capacity is limited, so careful filling and burping are important to prevent air locks.
- Always use a coolant formulated for light alloy (aluminum) engines to avoid corrosion inside the system.
- If you are riding in cold climates, verify your coolant is suitable down to at least -30°C.
Step-by-Step Coolant Change Instructions
-
Allow Engine to Cool Fully
Wait until the engine and radiator are cool to the touch before proceeding. -
Remove the Seat & Fuel Tank
Unfasten the seat, then disconnect the fuel hose from the tank. Locate and remove the screw (B) securing the top/front parts of the tank. Lift and remove the tank to access the radiator cap and filler. -
Remove the Radiator Cap
Slowly unscrew the radiator cap to release any built-up pressure. Do not remove the cap if the engine is hot.
-
Drain the Old Coolant
Locate the coolant drain bolt (typically at the lowest point of the water pump or radiator). Position a drain pan underneath, then carefully loosen the bolt to allow coolant to fully drain.
Tip: Tilting the bike gently can help ensure all fluid is removed. -
Inspect & Clean
Wipe away any coolant residue from the engine and hoses. If the radiator is dirty, gently clean the exterior fins with compressed air or a soft brush. -
Reinstall the Drain Bolt
Check the washer and replace if needed. Tighten the drain bolt securely. -
Add New Coolant
Using a funnel, fill the radiator slowly with the appropriate coolant up to the filler neck. Avoid overfilling. -
Burp the System
With the radiator cap still off, start the engine and let it idle for several minutes. Gently rock the bike and blip the throttle to release any trapped air bubbles. Watch as the coolant level may drop; top off as needed. -
Refit the Radiator Cap
Once the coolant settles at the correct level and bubbles stop, reinstall the radiator cap securely. -
Reinstall Fuel Tank & Seat
Fit the fuel tank back into place, connect the fuel line, and secure all fasteners. Replace the seat. -
Check for Leaks & Test Ride
Start the engine and let the bike warm up. Inspect for leaks at drain plug, hoses, and radiator. Shut down and recheck coolant level, topping up if necessary. -
Dispose of Old Coolant Responsibly
Collect the old coolant and take it to your local hazardous waste facility – never pour it down a drain or onto the ground.
Owner Tips for the 2019 TXT RACING 125
- Check coolant condition every few rides. Discoloration or debris indicates it is time to flush.
- While the tank is off, inspect all cooling hoses for cracks or wear – replace as needed for peace of mind.
- This model performs best with a clean air filter, correct spark plug gap, and properly maintained cooling system.
Keeping your TXT RACING 125's cooling system fresh and topped-off ensures reliable performance in the toughest trial conditions. For all necessary OEM and performance parts, don't forget to 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.