How to Change the Coolant in a 2021 GAS GAS EC350F
Keeping your 2021 GAS GAS EC350F's cooling system in top condition is essential for peak off-road performance and engine longevity. Below is MotoSport's proprietary step-by-step guide for coolant replacement on this specific model, including unique ownership notes.
What You Need
- Fresh engine coolant suitable for aluminum components (1.2 liters recommended volume)
- Seal ring for water pump screw (replace if worn)
- Basic hand tools (socket or Torx for water pump cover and radiator cap)
- Drain pan for used coolant
- Gloves and eye protection
- Clean cloths for spills
Safety First
- Always work with a completely cold engine to avoid burns and spray hazards.
- Coolant is harmful to skin, eyes, and clothing. If contact occurs, rinse thoroughly with plenty of water and change any soiled clothing immediately.
- If coolant is swallowed or gets into the eyes, seek medical attention immediately.
Step-by-Step Coolant Change
- Place the Bike Upright
With the bike on a stand or level surface, keep it upright to ensure proper coolant flow. - Remove Radiator Cap
Slowly remove the radiator cap to release pressure and allow coolant to drain completely later. - Position Drain Pan
Place a suitable container beneath the water pump cover on the right side of the engine. - Drain Old Coolant
Locate and remove the drain screw on the water pump cover (M6, 10 Nm torque when reinstalling later). Be careful while removing—the coolant will begin flowing once the screw is out.
Allow all coolant to drain fully. - Replace Seal Ring
Inspect the drain screw's seal ring and replace if worn or damaged for a proper seal. - Reinstall Drain Screw
Tighten the screw securely to 10 Nm once all coolant has drained. - Add New Coolant
Pour fresh coolant into the radiator opening slowly. The fill level should reach to about 10 mm above the radiator fins without overflowing (typically 1.2 liters). - Refit Radiator Cap
- Check for Leaks
Wipe all areas clean and inspect beneath the bike for leaks. - Run Engine & Top Off
Start the bike and let it idle for a few minutes to circulate the coolant and remove air pockets. Shut off the engine, let it cool, then recheck coolant level and top off to the correct height if needed.
Special Notes for the 2021 GAS GAS EC350F
- This bike uses a high-performance, closed cooling system. Use only coolant compatible with aluminum components to prevent corrosion or deposits.
- The total coolant capacity is about 1.2 liters and the fill line is measured 10 mm above the radiator fins when the bike is upright.
- Inspect radiator hoses and clamps for wear or leaks whenever changing coolant, as this model is designed for rugged conditions.
- Coolant should be changed yearly or after severe muddy, sandy, or high-heat use for optimal performance.
Responsible Coolant Disposal
Coolant is hazardous to the environment and toxic. Never pour used coolant down household drains or onto the ground. Take spent coolant to a recycling center or hazardous waste facility.
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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.