How to Change the Coolant in a 2014 GAS GAS EC 250: A Complete Guide
Maintaining the proper coolant in your 2014 GAS GAS EC 250 is essential for optimal engine performance and longevity. Regular coolant changes prevent overheating, corrosion, and mineral buildup inside your cooling system. The EC 250 has a specific layout, so following a precise process will ensure an effective coolant swap and continued trail reliability.
Preparation & Required Tools
- Fresh coolant (refer to your owner manual for recommended type and mixture ratio–typically a 50/50 blend of ethylene glycol-based coolant and distilled water is standard)
- Basic hand tools (screwdrivers, socket set, pliers)
- Drain pan
- Funnel
- Clean rags or shop towels
- Protective gloves & eyewear
Step 1: Allow Engine to Cool
Always ensure the bike is completely cool before servicing the cooling system to avoid burns or injury.
Step 2: Locate and Remove the Radiator Cap
The EC 250 has dual radiators; the cap is usually on the left radiator. Remove the seat and side panels if needed for easier access. Loosen the radiator cap slowly to release any residual pressure.
Step 3: Drain the Old Coolant
- Place a drain pan beneath the water pump (located on the right side of the engine).
- Remove the coolant drain bolt from the bottom of the water pump housing or, on some models, the lowest radiator hose clamp.
- Allow the coolant to drain fully. For a thorough job, tilt the bike gently or remove both lower radiator hoses for complete drain. Dispose of old coolant responsibly.
Step 4: Flush the System (Optional but Recommended)
If the coolant appears dirty, consider flushing the system:
- Reconnect hoses and refill with distilled water.
- Run the engine briefly (without radiator cap, watching fluid level).
- Turn off and let cool, then drain the water completely.
Repeat once if debris or contaminants remain. NEVER run the bike for extended periods without proper coolant.
Step 5: Reinstall the Drain Bolt and Secure Hoses
Reinstall and torque the coolant drain bolt to factory specification. Double-check all hose clamps and fittings for security–the EC 250 is known for robust cooling, but leaks will hinder performance.
Step 6: Add New Coolant
- Using a funnel, fill the radiator with new coolant to the recommended level.
- Tilt the bike side-to-side gently to help release air pockets from the cooling system.
- If the bike has a bleed screw (some EC models do), open it until coolant seeps out without bubbles, then retighten.
Step 7: Bleed the System and Top Off
- With the cap off, briefly start the engine and let it idle. Watch the coolant level and top off if necessary.
- As the thermostat opens, you may see air bubbles rise; add coolant as needed.
- Once the coolant remains steady, reinstall the radiator cap securely.
Step 8: Final Inspection
Check for leaks around hoses, clamps, and the drain bolt. After your next ride, recheck coolant level (when the engine is cool) and inspect for any signs of leakage.
2014 GAS GAS EC 250 Model Notes
- The EC 250 engine is designed for off-road endurance, meaning cooling efficiency is crucial for race and trail longevity.
- If you frequently ride in extreme conditions, consider using high-performance, dirt bike-specific coolant for enhanced protection against boiling and freezing.
- Inspect the radiators for damage or clogs, especially after falls or heavy trail use.
- Routine coolant changes (every 12 months or per your manual, whichever comes first) help maintain optimal engine temperature, especially on this two-stroke platform.
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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.