How to Change the Coolant in a 2024 GAS GAS ES 350F
Changing the coolant in your 2024 GAS GAS ES 350F is an essential part of routine maintenance, ensuring optimal engine performance and long-term durability. This guide provides step-by-step instructions specific to the ES 350F, with key safety and technical notes unique to this model.
What You Need
- Coolant: Use a high-quality motorcycle-specific coolant compatible with aluminum components.
- Tools: Socket set (for the water pump cover screw), drain pan, funnel, clean rags, and proper safety gear (gloves and eye protection).
- Seal ring: A new seal ring for the water pump cover screw is recommended for resealing integrity.
Preparation
- Ensure the engine is completely cool before starting.
- With the bike upright and stable, locate the water pump cover and radiator cap.
- Position a suitable container beneath the water pump to catch draining coolant.
Draining the Old Coolant
- Remove the radiator cap slowly to relieve any residual pressure.
- Use a socket to remove the drain screw from the water pump cover.
- Allow all coolant to drain into your pan. Tilting the bike side-to-side can help evacuate trapped coolant.
- Inspect the drain screw and replace the seal ring to prevent leaks during reassembly.
- Reinstall and torque the drain screw to manufacturer spec (10 Nm or 7.4 lbf ft).
Refilling with New Coolant
- Stand the bike upright.
- Using a funnel, pour new coolant into the radiator until it reaches about 10 mm above the radiator fins (just below the filler neck).
- Reinstall the radiator cap securely with the sealing ring in good condition.
Final Steps
- Start the engine and let it idle briefly. Shut it off and let it cool down, then recheck the coolant level. Top off if necessary.
- Check for leaks at the drain screw and around the radiator cap.
- Take a short test ride, monitoring engine temperature if possible.
- After cooling, do a final coolant level inspection and add coolant if the level has dropped, indicating trapped air has burped out.
2024 GAS GAS ES 350F Owner Notes
- This bike features a liquid-cooled, aluminum engine; never use plain water as coolant.
- It is normal for the coolant to expand into the reservoir as the bike heats up, then contract when cooled. Persistent drops in coolant level may point to an internal leak.
- The coolant capacity is approximately 1.2 liters (1.3 qt.).
- Excessive air in the system can cause overheating—always double check coolant level after the first ride.
- If coolant comes into contact with the skin or eyes, rinse immediately with water and seek medical attention if necessary.
Following these steps will help keep your 2024 GAS GAS ES 350F running cool and reliably 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.