How to Change the Coolant in a 2024 GAS GAS EX 450F
Shop parts for your ride now!Regular coolant changes are essential for maintaining the high-performance engine and optimal operating temperature of your 2024 GAS GAS EX 450F. Follow this step-by-step MotoSport guide for a safe and effective coolant change tailored to your specific model.
Supplies Needed
- New coolant (consult the manual for recommended type)
- Drain pan
- Socket set and screwdrivers
- Funnel
- Gloves and safety glasses
- Rags for cleanup
Preparation
- Ensure the engine is completely cool before starting.
- Position your bike on a stable stand in a well-ventilated area.
- Remove any body panels or the radiator shrouds for better access to the radiator and hoses.
Draining the Old Coolant
- Place a drain pan under the water pump drain bolt (typically the lowest bolt on the water pump cover).
- Remove the radiator cap to break the vacuum seal and allow coolant to flow out freely.
- Unscrew the drain bolt and let the old coolant completely drain into the pan.
- Check and clean the drain bolt; replace the sealing washer if necessary.
Flushing the Cooling System
- Reinstall the drain bolt temporarily.
- Fill the system with distilled water, let it circulate briefly by starting the engine for 30 seconds, then shut the engine off and drain again.
- Repeat as needed until the drained liquid runs clear.
- Once satisfied, ensure all water is drained before proceeding.
Filling With New Coolant
- Reinstall and torque the drain bolt to manufacturer spec.
- Using a funnel, slowly pour in the recommended coolant until it reaches the bottom of the radiator filler neck.
- Gently rock the bike side to side or squeeze coolant hoses to help air escape.
- Top off the system as needed to maintain maximum fill.
Air Removal and System Bleeding
- Start the engine and let it idle with the radiator cap off to allow trapped air to rise and escape. Monitor the coolant level and avoid spillage as the bike warms up. As the thermostat opens, add more coolant if the level drops.
- Once stable, shut off the engine and let the bike cool completely.
- Check and top off both the radiator and overflow reservoir as needed.
- Install the radiator cap securely.
Post-Service Checks
- Check system for leaks after the bike has run and cooled again.
- Inspect the coolant level after your next ride and top off if required.
EX 450F Model-Specific Notes
- The 2024 EX 450F uses a high-efficiency radiator and a closed coolant system. Using the proper specification coolant is critical for corrosion protection and system performance.
- The coolant reservoir acts as an overflow and recovery tank. Pay special attention to this as air removal often occurs here after initial refills–if the level drops after your first ride, simply top it off.
- GAS GAS recommends checking coolant condition at scheduled maintenance intervals and after high-intensity riding or if your bike has overheated.
- Environmentally, always dispose of old coolant at an appropriate recycling center as most coolants are hazardous to people, animals, and the environment.
- NEVER open the radiator cap when the engine is hot–serious burns may result due to pressurized steam release.
Performing a proper coolant change is a straightforward way to protect your EX 450F investment and keep your engine running at peak efficiency. Regular maintenance is the key to reliable rides both at the track and on the trails.
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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.