How to Change the Coolant in a 2020 GAS GAS TXT RACING 250
Routine coolant changes are crucial for keeping the 2020 GAS GAS TXT RACING 250 performing at its best on the trails and sections. This trial bike's high-revving two-stroke engine and lightweight cooling system mean keeping optimal coolant levels – and fresh coolant – is a must. Here's a step-by-step MotoSport guide tailored specifically for owners of this model:
Tools & Supplies Needed
- Fresh engine coolant compatible with aluminum radiators (avoid straight water or subpar fluids)
- Catcher pan or bucket for used coolant
- Basic hand tools (ratchet, socket set, screwdriver, pliers)
- Funnel
- Clean rag
- Protective gloves and eyewear
Preparation
- Let the engine completely cool down. Never attempt this with a hot engine or cooling system to prevent injuries and system damage.
- Set the bike securely on a stand in a well-ventilated area.
Step 1: Remove Seat & Shrouds (if needed)
For improved access, remove the seat and side panels as needed. On the TXT RACING 250, these come off quickly – the compact fuel tank and slim bodywork make for easy access to the radiator fill and hoses.
Step 2: Drain the Old Coolant
- Locate the radiator cap on top of the left side of the bike. Slowly remove it – if you hear hissing or see bubbles, wait for them to subside before fully removing the cap.
- Find the water pump drain bolt, usually at the lowest point of the right engine case where the coolant hose enters. Position the catch pan beneath, loosen the bolt, and allow the coolant to drain out.
- You may need to gently rock the bike side-to-side to get all the coolant out. Some models have a dedicated drain plug – consult your TXT 250's manual if uncertain.
Step 3: Inspect the System
- While draining, take a look at coolant color and clarity. Dirty, rusty, or milky coolant means you need to flush the system or check for internal issues.
- Inspect radiator hoses for cracks or swelling, and check the radiator fins for blockages or damage.
Step 4: Reinstall Drain Bolt
- Once drained, carefully reinstall and lightly torque the water pump drain bolt. Use a new copper washer if needed to prevent leaks.
Step 5: Fill with Fresh Coolant
- Using a funnel, add fresh coolant slowly into the radiator neck, letting air escape. Gently lean the bike side-to-side to help burp trapped air.
- Fill just below the overflow neck. Avoid overfilling, which can cause spillage when the system expands with heat.
Step 6: Bleed Air (If Required)
- Some trial bikes, including the TXT RACING 250, can trap air in the head or hoses. If your bike has a dedicated bleed screw on the cylinder head or thermostat, loosen it until coolant flows out without bubbles, then retighten.
Step 7: Reassemble and Check
- Reinstall seat, tank, and bodywork. Double-check for any stray tools or rags.
- Start the bike and let it idle for several minutes. Shut it off, let it cool, and re-check coolant level. Top-off if necessary.
Model-Specific Tips & Reminders
- The 2020 TXT RACING 250 features a lightweight, high-flow cooling system designed for consistent performance at low speeds and under heavy clutch use. Always use a high-quality coolant formulated for aluminum systems to prevent corrosion or cavitation.
- Efficient cooling is key for trials stability. If you ride in hot climates or plan extended sessions, check for radiator blockages and consider upgrades via Technical Accessories if needed.
- The slim radiator and small coolant capacity mean regular checks – coolant loss is more likely in a tip-over or after a crash. Always inspect after hard rides or drops.
Dispose of Old Coolant Properly
Never pour used coolant on the ground or down the drain. Take it to a designated recycling or hazardous waste center.
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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.