How to Change the Coolant in a 2009 GAS GAS EC 250
Regular coolant changes are essential for the long-term reliability of your 2009 GAS GAS EC 250. The cooling system on this model uses a two-stroke, liquid-cooled engine designed for maximum off-road performance. Following the proper process not only helps prevent overheating but also protects internal components from corrosion and premature wear.
What You Need
- Fresh coolant – use motorcycle-specific coolant
- Drain pan
- Socket set (10mm commonly needed for water pump bolts)
- Phillips screwdriver
- Funnel
- Clean rag
- Safety gloves and goggles
Step-by-Step Coolant Change Guide
-
Preparation
Make sure the engine is completely cool. Place the bike on a stable stand. Remove the right side panel for easier access to the radiator cap and drain bolt. -
Remove the Radiator Cap
Slowly loosen and remove the radiator cap. Relieving pressure before draining minimizes spillage. Set the cap in a clean area. -
Locate the Coolant Drain Bolt
On the GAS GAS EC 250, the coolant drain bolt is mounted on the water pump cover, usually distinguished by a copper washer. Position your drain pan beneath the bolt.
Loosen the bolt with the correct socket and allow old coolant to completely drain. To speed drainage, you can also loosen the lower radiator hose clamp and disconnect the hose. -
Flush the System (Optional but Recommended)
Reinstall the drain bolt and fill the radiator with distilled water. Run the engine briefly (without the radiator cap), then repeat the drainage process. This flush removes lingering debris or old coolant. -
Reinstall All Components
Make sure the drain bolt (and hose clamp, if loosened) is securely tightened. Inspect the copper washer for wear and replace if needed to avoid leaks. -
Refill with New Coolant
Using a funnel, pour fresh coolant into the radiator until it reaches the top of the fill neck. Squeeze the radiator hoses gently to help purge trapped air.
Allow the level to settle, top off as needed, then loosely place the cap on the radiator. -
Bleed the Cooling System
Start the bike and let it idle with the radiator cap off. As the engine warms, air bubbles will rise and the coolant level may drop. Add more coolant as required.
Once coolant remains steady and no further bubbles emerge, replace the radiator cap securely. -
Final Check
After a short ride, shut off the engine and let the bike cool. Recheck the coolant level and inspect for leaks at the drain bolt, water pump, and hoses. Top off as necessary.
Owner Tips for the 2009 GAS GAS EC 250
- This bike uses a copper washer on the drain bolt; always check it for damage to prevent leaks after service.
- Never mix coolant types. Always use a high-quality, silicate-free coolant formulated for aluminum radiators.
- The EC 250 is engineered for aggressive off-road use, so inspect your radiator for mud or damage during each coolant change.
- Check your coolant more frequently if you ride in sandy or hot conditions, as overheating can quickly damage the top end on two-stroke engines.
- If you notice recurring coolant loss, investigate the water pump seal and impeller, as these are wear items on this model.
Consistent maintenancelike keeping your cooling system freshensures your GAS GAS EC 250 remains dependable on any trail or competition course. Enjoy the ride and keep your machine ready for every adventure!
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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.