How to Change the Coolant in a 2009 GAS GAS EC200
The 2009 GAS GAS EC200 is a performance-oriented enduro bike with a liquid-cooled 2-stroke engine. Keeping the cooling system maintained is key for engine life, smooth power delivery, and reliability. Here is a comprehensive guide on changing the coolant for your EC200, along with some crucial tips just for this model.
What You'll Need
- Appropriate pre-mixed motorcycle coolant (avoid using standard car antifreeze)
- Distilled water (if coolant is not pre-mixed)
- Catch pan
- Basic hand tools: flathead screwdriver, socket set
- Clean rags
- Protective gloves
Preparation
- Make sure the engine is completely cool before starting the process. Never open the radiator cap when hot as you risk scalding injury from hot coolant under pressure.
- Position your dirt bike securely on a stand in a well-ventilated area.
Draining the Old Coolant
- Remove any plastic shrouds or panels blocking access to the radiator and drain bolt.
- Locate the radiator cap at the top and the drain bolt (usually at the base of the water pump).
- Place your catch pan under the drain bolt.
- Remove the radiator cap to allow airflow and loosen the drain bolt. Let all old coolant completely drain out.
- Inspect coolant colorif you see rust, milky residue, or debris, consider a system flush with distilled water before refilling.
Optional: Flushing the System
- If the coolant was neglected, pour a 50/50 mix of vinegar and distilled water into the radiator. Run the engine briefly, then drain. Follow up with pure distilled water, drain again, and ensure all flush fluid is out before proceeding.–Not all EC200s require this step unless debris is noted.–
Refilling with Fresh Coolant
- Reinstall and tighten the drain bolt with a new sealing washer if needed.
- Pour in fresh coolant to the radiator top using a clean funnel. Most EC200s require about 1 liter of coolant, but consult your owner's manual for exact fill volume.
- If your model has a cylinder head bleeder screw, open it as you pour to let air escape. Once coolant flows steadily from the bleeder, close it.
Removing Air from the System (Burping)
- With the radiator cap off, start the engine and let it idle. Gently rock the bike side-to-side and squeeze the radiator hoses to encourage any trapped air to surface.
- Watch as the coolant level drops; slowly add more as needed. Once bubbling stops and the level stabilizes, stop the engine.
- Top off the coolant to the neck and fill the overflow reservoir to the recommended line.
Final Steps
- Install the radiator cap securely.
- Reinstall any removed bodywork.
- Clean off any spills from the frame or engine cases.
- Safely dispose of old coolant at an auto parts store or recycling programnever pour it down a drain or onto the ground.
- After your first ride, check overflow reservoir and radiator levels again and top off if needed.
GAS GAS EC200-Specific Notes
- The 2009 EC200 uses a unique blend of lightweight aluminum radiators and low-capacity high-flow cooling passages. Always use pre-mixed motorcycle coolant or a 60/40 mix of distilled water and quality coolant–never straight tap water– to prevent mineral scale within the system.
- Some EC200s may use a colorless OEM fluid; green or pink motorcycle coolant is fine as long as it is compatible with aluminum engines and contains anti-corrosion additives.
- Inspect radiator hoses and clamps for cracks or leaksthese models are known for hose aging after a few seasons.
- A temperature sensor or aftermarket radiator guards can extend system durability for hard enduro use.
Common Mistakes to Avoid
- Mixing coolant types (for example, silicate-based with silicate-free) can cause gel buildup.
- Forgetting the reservoir fill–only filling the radiator can leave the system underfilled.
- Neglecting periodic coolant changes (at least every two seasons) may allow corrosion or overheating issues.
Maintaining the proper coolant level and type in your 2009 GAS GAS EC200 keeps you riding longer with less risk of engine damage. Always check for leaks, monitor your overflow tank, and ride with confidence.
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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.