How to Change the Coolant on a 2009 GAS GAS EC 450F Dirt Bike
Regular maintenance of your 2009 GAS GAS EC 450F ensures top performance and longevity, and changing the coolant is a vital part of your service routine. Here&s how to perform a complete coolant change tailored to this model:
Preparation Tips Specific to the EC 450F
- Check the coolant only when the engine is cold for accurate readings and safety—hot coolant is pressurized and dangerous to open (owner&s manual guidance).
- Use glycol-based motorcycle coolant, and if using concentrate, dilute it with distilled water (never tap water).
- Replace the coolant periodically to prevent overheating and corrosion inside the engine and radiators.
Step-by-Step Guide
- Allow the bike to cool completely. Never open the radiator cap or drain bolt while the engine is hot.
- Locate the radiator cap and the water pump drain bolt (typically at the lowest point on the engine case).
- Remove the radiator cap to allow air in, which helps the coolant drain faster.
- Place a drain pan under the water pump area.
- Remove the drain bolt. Coolant will start to flow out. Allow it to drain fully.
- Inspect and replace the copper washer on the drain bolt to avoid leaks when reassembling.
- Reinstall the drain bolt and torque it to 10 Nm.
- Slowly fill the radiator with fresh coolant up to the top of the filler neck.
- Start the engine briefly (with the cap off), gently rock the bike, and blip the throttle to burp the cooling system–this removes trapped air bubbles.
- Top off the coolant if the level goes down after burping. Fill the overflow reservoir to the upper mark.
- Reinstall the radiator cap securely. Check for leaks.
- Dispose of the old coolant safely at a recycling center.
Special Considerations for the GAS GAS EC 450F Owner
- The EC 450F cooling system is compact, so proper burping is essential to avoid overheating from air pockets.
- If replacing factory coolant with a different type, flush the system thoroughly—compressed air helps clear out the old coolant better than just water.
- Check hoses and clamps while you have the system apart; deterioration is more common with older bikes and hard off-road use.
When to Change Your Coolant
- At least once per year, or before and after any major riding season.
- If you notice decreased cooling efficiency or abnormal engine temperature readings.
Keeping your 2009 GAS GAS EC 450F&s cooling system clean protects your engine for every ride. Maintain routine coolant service and enjoy top trail performance.
Related Shopping Categories
Shop Radiator Hoses for Your Ride
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.