How to Change the Coolant in a 2020 GAS GAS TXT RACING 300
Keeping your 2020 GAS GAS TXT RACING 300 operating at peak performance means regular maintenance, and changing the coolant is essential to preserve your engine’s cooling efficiency, especially given its advanced liquid-cooled two-stroke powerplant. This step-by-step guide – based on factory specifications – ensures you can tackle this crucial job with confidence.
Things You Need
- Suitable replacement coolant (silicate-free, engineered for aluminum engines)
- Socket wrench set
- Drain pan
- Funnel
- Gloves & safety goggles
- Torque wrench (recommended)
- Fresh water or distilled water if rinsing the system
- Clean rags
Precautions for the TXT RACING 300 Model
- Never remove radiator cap, hoses, or open any cooling system part while the engine is hot – severe burns or engine damage can result.–
- The GAS GAS TXT RACING 300 features a precision aluminum cylinder and high-performance radiator – always use the specified coolant type and ensure the system is fully bled of air after service to avoid hot spots.
- Routine coolant inspection helps prevent scale and mineral buildup particular to trial bikes regularly exposed to mud and water crossings.
Step-by-Step Coolant Change Process
- Let engine cool: Ensure the engine is completely cold before you begin. Place the dirt bike upright on a stand for easier access.
- Remove necessary bodywork: On the TXT RACING 300, you may need to remove the fuel tank or shrouds to access the radiator cap.
- Open radiator cap: Slowly loosen and remove the radiator cap to release pressure.
- Locate and remove drain bolt: Locate the coolant drain bolt at the base of the water pump housing or on the lower engine case (right side). Place your drain pan underneath.
- Drain old coolant: Remove the bolt and allow all coolant to drain completely. Tilting the bike gently side to side can help remove trapped coolant.
- Inspect and clean: Check the condition of the coolant – milky or dirty coolant may indicate other issues. Inspect and clean the drain bolt and sealing washer.
- Flush (optional, recommended): For best results, flush the system with distilled water. Reinstall the drain bolt, fill with water, run the bike briefly (no more than a minute), then drain completely again.
- Reinstall drain bolt: Refit the cleaned drain bolt and torque to manufacturer specification to prevent leaks (consult your owner's manual for precise torque values).
- Add new coolant: Using a funnel, slowly fill the radiator with the recommended coolant until the level reaches the radiator neck.
- Bleed the system: With the bike upright, briefly start the engine with the radiator cap off to circulate coolant and purge air bubbles. Watch for air escaping as the level drops, then top off as needed. Once no more bubbles appear, reinstall the cap securely.
- Check and finish: Inspect for leaks at the drain bolt and hoses. Reinstall any removed bodywork. Wipe down spilled coolant – it’s toxic and slippery. Ride briefly, let the engine cool, then recheck the coolant level. Top off if needed.
Key Notes for Your 2020 TXT RACING 300
- The TXT RACING line is engineered for hard, technical rides – maintaining proper coolant level and quality is critical for these high-revving two-strokes under heavy loads.
- Only use coolants formulated for aluminum and magnesium alloys to prevent internal corrosion in the unique trials engine.
- Check the maintenance schedule in your manual and perform coolant changes at least once annually, or more often with tough usage.
- After coolant change, always check operation of the radiator fan (if equipped) and inspect hose clamps for tightness.
Caring for your TXT RACING 300’s cooling system ensures reliable performance for every trial obstacle you tackle. For all service parts and OEM upgrades, remember 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.