How to Change the Coolant in a 2013 GAS GAS EC 300: A MotoSport Guide
Maintaining the cooling system of your 2013 GAS GAS EC 300 is critical for engine performance and longevity. Coolant not only keeps the engine operating within safe temperatures, but also protects internal components from corrosion and buildup. Follow this step-by-step MotoSport guide for a complete coolant change, including special considerations unique to your GAS GAS EC 300.
Tools & Supplies You'll Need:
- Compatible engine coolant (the manufacturer recommends a glycol-based coolant, GRO GCC 30% for long-term performance)
- Catching pan
- Socket wrench or spanner (for drain bolt)
- Funnel
- Clean rags
- Distilled water (optional; for flushing)
- Gloves & safety eyewear
Step 1: Preparation
- Ensure your EC 300 engine is cool before starting.
- Place the bike securely on a stand or flat ground, with easy access to the radiator and drain bolt area.
- Remove the seat and side panel for easier access if necessary.
Step 2: Drain Old Coolant
- Locate the radiator cap – typically on the left side under or beside the fuel tank. Remove the cap slowly to relieve pressure.
- Identify the coolant drain bolt (usually found at the bottom of the water pump cover on the right side of the engine).
- Place a drain pan beneath the bolt. Remove the bolt with your wrench, allowing the coolant to drain completely.
- To ensure thorough draining, you can gently tilt the bike side-to-side.
Step 3: Flush the System (Optional)
- If your existing coolant is dirty, flush the system by pouring distilled water through the radiator filler neck until it runs clear from the drain. Replace the drain bolt afterwards.
Step 4: Inspect & Reinstall Drain Bolt
- Check the condition of the drain bolt washer or O-ring; replace if worn or damaged to prevent leaks.
- Reinstall the drain bolt securely, being careful not to overtighten and strip threads.
Step 5: Add New Coolant
- Using a funnel, slowly pour the new recommended coolant into the radiator filler neck until it reaches the top.
- On the 2013 EC 300, the system capacity is approximately 1 liter. Fill until the coolant is visible at the neck.
- Gently rock the bike and squeeze radiator hoses to remove trapped air. Top off if necessary.
Step 6: Bleed the System & Check for Leaks
- Start the engine and let it idle for several minutes with the radiator cap off. This helps purge residual air bubbles.
- Watch the coolant level; add more if it drops.
- Once steady, stop the engine and replace the radiator cap securely.
- Inspect around the drain bolt and radiator hoses – check for leaks.
Step 7: Final Checks & Routine Maintenance Tips
- After the first ride, let the bike cool and recheck coolant level – top off if needed.
- Inspect the radiator cap's pressure rating (the OEM cap is 1.8 bar). Replace if the cap is worn, as maintaining correct pressure is vital for EC 300 cooling performance.
- Periodically inspect hoses and clamps for cracks or leaks, especially after aggressive off-road riding.
Notable Model-Specific Considerations
- The 2013 GAS GAS EC 300 features a high-performance two-stroke engine; using the proper coolant mixture is essential for optimal thermal transfer and to prevent vapor lock.
- Due to the compact radiator system, these bikes can be prone to overheating in slow, technical terrain. Ensure radiators are free of mud and debris before each ride.
- The coolant circuit on the EC 300 is straightforward, but always double-check both left and right radiators are adequately filled after servicing.
Regularly changing the coolant on your EC 300 is a simple yet vital aspect of maintaining its legendary performance, especially for demanding enduro riding. If you need replacement coolant, hoses, or a new radiator cap, don't wait– 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.