How to Change the Coolant in a 2021 GAS GAS EX 350F
Keeping your 2021 GAS GAS EX 350F's cooling system in top condition is critical for performance and longevity, especially when you demand reliability on tough trails and tracks. Here are step-by-step, MotoSport-exclusive instructions tailored for the EX 350F owner–plus key model-specific insights every rider should know.
What You Need
- Fresh coolant (check your manual for type; typically a high-quality, motorcycle-approved ethylene glycol blend)
- Catch pan
- Basic metric hand tools
- Protective gloves and eyewear
- Clean funnel
- Torque wrench
Safety First
- Always allow the engine to cool to avoid burns.
- If coolant contacts your skin or eyes, rinse thoroughly with water and consult a medical professional if irritation persists or coolant is swallowed.
- Change clothing if coolant spills onto your gear.
Draining the Old Coolant
- Stand the motorcycle upright on a stable surface.
- Remove the radiator cap. Do this slowly to release any remaining pressure.
- Locate the coolant drain bolt–on the EX 350F, this is found on the water pump cover near the lower right side of the engine.
- Position your catch pan beneath the bolt.
- Remove the drain bolt and allow all coolant to fully drain.
- Inspect the sealing washer; replace it if worn.
- Reinstall and torque the drain bolt (typically M6, 10 Nm or 7.4 lbf ft–check your manual to confirm).
Refilling the System
- Using a clean funnel, slowly pour new coolant into the radiator until the level is approximately 10 mm above the radiator fins.
- Reinstall the radiator cap securely.
Final Steps
- Start the engine and let it idle for 30–60 seconds. This helps release trapped air from the system.
- Shut off the engine and let it cool completely.
- Re-check the coolant level, topping off if necessary.
- Take a short, easy test ride, then inspect for leaks and do a final coolant level check.
Special Notes for the 2021 GAS GAS EX 350F
- Coolant Capacity is approximately 1.2 L (1.3 qt.)–do not overfill.
- The EX 350F's cooling system is designed for high-output enduro use and benefits from mid-interval checks in hot climates or after heavy use.
- Monitor the condition of radiator hoses and clamps–age, heat, and vibration can affect their integrity.
- Inspect the radiator cap seal for wear during each coolant change–replace if the seal looks dry or cracked.
- Use only coolants approved for aluminum components to prevent corrosion and damage to the pump and radiators.
Routine maintenance makes the difference between winning performance and unwanted downtime. For genuine replacement parts, top-grade coolants, and more, MotoSport is your trusted partner for keeping your 2021 GAS GAS EX 350F running strong on every ride.
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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.