How to Change the Coolant in a 2023 GAS GAS EX 250F – MotoSport Guide
Keeping your 2023 GAS GAS EX 250F running strong starts with proper cooling system maintenance. Regularly changing the coolant not only protects your engine but also ensures peak performance across tough terrain and all seasons. Follow this exclusive MotoSport guide for a straightforward, proprietary approach to swapping coolant on your EX 250F.
What Sets the 2023 GAS GAS EX 250F Apart?
- High-performance fuel-injected engine — relies on consistent cooling for reliable ignition and efficiency.
- Integrated cold start function — provides easier starting in low temperatures, but demands a solid coolant base for thermal regulation and injector calibration.
- Advanced aluminum radiators & fins — maximize cooling, but require unobstructed airflow and fresh, debris-free coolant.
Before You Begin
- Work on a cool engine – hot coolant is pressurized and dangerous.
- Gather tools: drain pan, socket set, pliers, suitable coolant (race-ready options are recommended), funnel, and clean shop towels.
- Review owner's manual safety instructions for your model.
Coolant Change Procedure
-
Secure the Motorcycle
Place the EX 250F on a plug-in stand or use tension belts to stabilize. Make sure your brake line is positioned correctly, avoiding pressure or kinking. -
Access the Cooling System
Remove the plastics or shrouds covering the radiator cap. Detach the cap by pressing the release button and turning counterclockwise, then lift it away. -
Drain the Old Coolant
Locate the coolant drain bolt at the base coolant hose or engine case. Position your drain pan underneath. Loosen the bolt and allow coolant to empty completely.
Tip: Gently open the radiator cap while draining to accelerate the process and improve air flow. -
Flush the System (Recommended)
Add distilled water, re-tighten the drain bolt, start the engine briefly (no more than a minute), then shut off and drain again. This flush removes deposits. -
Inspect and Clean Radiator Fins
Use compressed air or a soft brush to remove dirt. Straighten any bent fins carefully for optimal cooling efficiency. -
Replace the Drain Bolt
Clean the bolt threads and replace the sealing washer if needed. Torque the bolt to manufacturer specs. -
Fill with New Coolant
Using a funnel, pour in fresh coolant to the specified fill line.
On the EX 250F, bleed air from the system by unscrewing the bleed port on top of the cylinder head. When coolant flows freely and bubble-free, re-tighten. -
Check and Top Off
Check the coolant level. Top off as needed, ensuring the system is fully purged of air.
Mount the radiator cap by turning clockwise until the release button engages. -
Final Inspection
Wipe away any coolant drips. Double-check the cap, hose connections, and drain bolt for tightness. Run the engine and observe for leaks or temperature irregularities.
Expert Tips for Your 2023 EX 250F
- Use only coolants approved for aluminum engines and racing environments.
- Check coolant level frequently when riding in sand, mud, or extreme heat; the EX 250F is engineered for high-performance, but overheating can occur with restricted airflow.
- When prepping for cold weather, utilize the cold start button to optimize combustion and keep the cooling system at peak efficiency.
Why Coolant Changes Matter
- Prevents corrosion and scaling inside the radiator and cylinder head.
- Protects water pump seals and engine gaskets.
- Maintains steady operating temperature for maximum horsepower and engine longevity.
Follow these steps and notes for a confident DIY coolant change. Trust MotoSport to keep your GAS GAS EX 250F tackling the trails with power and precision.
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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.