How to Change the Coolant in a 2005 GAS GAS EC200
Keeping the coolant fresh and at the correct level is critical for the long-term reliability and performance of your 2005 GAS GAS EC200, especially during hard off-road use. Regular coolant changes prevent overheating, corrosion, and damage to the cooling system. This detailed guide will walk you through the process for this specific model, including key notes particular to the 2005 EC200.
What You Need
- Fresh motorcycle-appropriate coolant (pre-mixed or mix with distilled water as recommended)
- Socket or wrench (refer to size for radiator drain plug/bolt)
- Phillips screwdriver (for shroud and radiator cap removal)
- Drain pan
- Clean shop rags
- Protective gloves
Step-by-Step Coolant Change Procedure
- Ensure the engine is cold. Remove the seat and side panels as necessary to access the top of the radiators and cap. This prevents risk of injury and ensures the system isn't pressurized.
- Remove the radiator cap slowly to release any residual pressure.
- Place a drain pan underneath the engine. On the 2005 EC200's two-stroke engine, the coolant drain bolt is typically located at the lowest point of the water pump cover on the right side of the engine case.
- Using the correct sized socket, remove the drain bolt and allow the old coolant to completely drain. You may need to loosen or remove the radiator lower hose to increase flow in some cases.
- Inspect the coolant for contamination. If the old coolant is rusty, milky, or contains particles, additional cooling system cleaning may be required before refilling.
- Reinstall the drain bolt. Use a new aluminum or copper crush washer if equipped to prevent leaks, and torque the bolt snugly but do not overtighten.
- Mix your coolant if using concentrate. A 50/50 coolant to distilled water mix is generally recommended, but always follow the ratios listed in the manual or on the coolant bottle.
- Slowly pour coolant into the radiator through the cap opening until it reaches the base of the filler neck. Gently rock the bike side to side to release any trapped air.
- Bleed the cooling system. On many EC200s, a small bleeder screw is located near the top of the cylinder head or radiator. Open this screw briefly after filling to release trapped air, then retighten when only coolant (no bubbles) exits.
- Reinstall the radiator cap securely.
- Start the engine and let it idle for several minutes. Watch the coolant level in the radiator; add more as necessary once the thermostat opens and any trapped air is released. Turn off the bike, allow it to cool, then recheck and top up the radiator and overflow tank if applicable.
- Reinstall any previously removed panels and hardware.
Important 2005 GAS GAS EC200 Notes
- Coolant choice: Always use a modern, aluminum-compatible motorcycle coolant. Do not use plain water or automotive coolant with silicates, as these can damage the lightweight EC200 radiator and water pump.
- Cylinder head bleed screw: Some EC200s feature a bleed screw on the cylinder head. Always bleed air from this point during refill to prevent dangerous air pockets – failure to do so can result in localized overheating.
- Check for leaks: After your first ride, inspect the water pump area and all radiator hose connections for leaks.
- Maintenance schedule: GAS GAS recommends checking coolant level before every ride and changing coolant every 2 years or sooner in harsh environments.
Proper Disposal
Never pour old coolant down the drain or onto the ground. Bring used coolant to a recycling or hazardous waste facility according to local laws to help protect the environment.
Summary
Changing the coolant on your 2005 GAS GAS EC200 is a straightforward but essential task that keeps your dirt bike performing at its peak. Taking a few extra minutes to properly bleed the system and choose the correct coolant will prevent overheating and extend the life of your engine and cooling components. For parts, gaskets, or upgrades for your EC200, MotoSport has everything you need.
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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.