How to Change the Coolant in a 2020 GAS GAS TXT RACING 280
Shop parts for your ride now!Routine coolant changes help maximize engine life and consistent performance in your 2020 GAS GAS TXT RACING 280. This model’s liquid-cooled, two-stroke engine is built for precision trials riding, meaning keeping its cooling system serviced is essential for reliability and power delivery. Below you’ll learn a proprietary step-by-step coolant change process tailored for your TXT RACING 280, as well as important tips uniquely relevant for this model year.
What Makes the TXT RACING 280 Cooling System Unique?
- Lightweight radiator design: The TXT RACING 280 radiator is compact and mounted high for better trials clearance–extra caution is advised when removing hoses or the cap to avoid damaging surrounding components.
- Low volume, rapid circulation: The system uses a relatively low coolant volume and is designed for quick heat removal at low speeds, so air pockets after refilling can overheat the engine if not properly bled.
- Non-pressurized overflow: This model has a basic overflow tube instead of an expansion tank. Do not overfill past the “max” mark or you risk spillage during operation.
Tools & Supplies You Will Need
- Fresh coolant compatible with aluminum radiators (silicate-free, phosphate-free; check your owner’s manual for specifics)
- Suitable size hose clamp pliers or screwdriver
- Catch pan for old coolant (minimum 2 liters capacity)
- Clean funnel
- Rags and gloves for safety
Step-by-Step Coolant Change Procedure
- Preparation
– Ensure the engine is completely cool before starting.
– Place the bike on a level stand for stability and access. - Remove the radiator cap
– Slowly loosen and remove the radiator cap to release any residual pressure. - Drain old coolant
– Locate the coolant drain bolt (usually on the lower water pump cover). Position the catch pan underneath.
– Remove the drain bolt and allow all coolant to flow out. You may need to loosen the lowest hose at the radiator to ensure complete drainage. - Flush (if necessary)
– For heavily discolored or contaminated coolant, flush the system with distilled water before refilling. - Reinstall drain bolt and tighten to specification
– Inspect the sealing washer for wear and replace if needed before reinstalling the bolt. - Refill with new coolant
– Pour new coolant into the radiator neck using a funnel. Fill until the coolant just reaches the bottom of the fill neck or marks as indicated in your manual. - Bleed air from the system
– With the radiator cap off, slowly rock the bike side to side and gently squeeze the lower radiator hose to release trapped air bubbles.
– If equipped, use any designated bleed screws on the radiator or cylinder head to expel air. Tighten after air is released and fluid appears. - Check coolant level
– Top off as necessary. Reinstall and secure the radiator cap. - Warm the engine and recheck
– Start the engine and let it idle for 2–3 minutes. Stop the engine, let it cool, then check and adjust the coolant level again as air may burp out during initial operation. - Inspect for leaks
– Carefully inspect all hose connections and the drain bolt area. Tighten any loose clamps or bolts.
Extra Tips for 2020 TXT RACING 280 Owners
- Always use the correct coolant type recommended in your manual–it must be aluminum-compatible, and avoid using plain water or automotive coolant with silicates.
- The cooling system in trials bikes like the TXT RACING 280 is especially sensitive to low coolant level due to its compact size–check before every ride.
- If riding in extremely hot or cold climates, verify the antifreeze properties are suitable for the local temperature extremes.
- Any overheating, unexplained coolant loss, or visible leaks should be investigated immediately to prevent engine damage.
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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.