How to Change the Coolant in a 2012 GAS GAS TXT PRO 250
Regular coolant maintenance is critical for the peak performance of your 2012 GAS GAS TXT PRO 250. Neglecting this routine job can lead to overheating, corrosion, and premature engine wear. Here is your proprietary MotoSport guide tailored to this unique trials machine.
Preparation – What You Will Need
- Fresh coolant (use high-performance, lightweight alloy-friendly coolant rated for aluminum engines)
- Basic hand tools: screwdriver, ratchet and sockets, Allen wrenches
- Drain pan
- Funnel or flexible filling tube
- Protective gloves and safety eyewear
- Clean shop towels
Important Notes for Your Model
- The TXT PRO 250 has a compact chassis – access to the radiator cap is under the fuel tank, which often requires tank removal for service.
- Coolant drain is handled via the water pump drain bolt located low on the left side of the engine. Some reports note stubborn draining – persistence is sometimes needed if residue clogs the bolt or passage.
- Always service the coolant with the engine cold to avoid risk of scalding.
Step 1: Remove the Fuel Tank for Access
Remove the seat (if equipped), then the upper tank mount bolt using your socket. Disconnect the fuel line and gently lift the tank out of the chassis to expose the top of the radiator.
Step 2: Remove the Radiator Cap
Put on safety gear and slowly loosen the radiator cap to release any built-up pressure. Place the cap in a safe spot.
Step 3: Drain the Old Coolant
- Position your drain pan beneath the left lower side of the engine (where the water pump is).
- Locate the water pump drain bolt. Use the correct Allen wrench to slowly remove the bolt – coolant should begin to flow out.
- If flow is sluggish, gently wiggle a small tool to clear any blockage, but do not force or damage the sealing surface.
- After the system drains, check hoses and the removed bolt for white or sugary residue – this is a sign of old or improper coolant. Wipe clean before reinstallation.
Step 4: Flush the System (if necessary)
If residue is found, flush the system by temporarily re-installing the drain bolt, filling the system with distilled water, then draining again. Repeat as needed until clear water runs out. Never use tap water, as minerals can cause corrosion.
Step 5: Reinstall Drain Bolt & Add New Coolant
- Reinstall the water pump drain bolt, tightening firmly but not over-torquing.
- Use a funnel to fill the radiator with fresh coolant. Fill slowly to prevent air pockets.
- Check the level after a few minutes – coolant may settle as air escapes, so top up as needed.
Step 6: Bleed Air and Reassemble
- With the cap off, tip the bike gently side-to-side to help purge trapped air.
- Start the engine and run at idle for 2-3 minutes; shut off, cool, and recheck level. Top off if necessary.
- Reinstall the fuel tank, ensuring the fuel line is reconnected securely.
- Replace the radiator cap and any covers removed.
Tips & Reminders
- Always use a coolant formulated for lightweight alloys and motorcycle engines. Avoid cheap or automotive coolants with silicates/phosphates.
- Inspect hoses and radiator cap for cracks or swelling; replace if questionable.
- If you spot white deposits (sugary residue) around the filler neck, it's a sign your coolant is overdue for service, or the wrong type was previously used.
- Check fluid levels after your first ride, and inspect for leaks at all connections and around the pump drain bolt.
Keeping Your TXT PRO 250 Ready for Any Course
Diligent cooling system upkeep ensures your 2012 GAS GAS TXT PRO 250 delivers the torque, snap, and reliability to conquer any obstacle. Timely coolant changes protect your investment and provide peace of mind each time you head out for trials mastery.
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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.