How to Change the Coolant in a 2022 GAS GAS EX 350F
Maintaining the cooling system on your 2022 GAS GAS EX 350F is essential for reliable performance and longevity. Regular coolant changes prevent overheating and internal corrosion. This guide covers step-by-step instructionsplus some unique model notesso you can confidently service your GAS GAS EX 350F at home.
Before You Begin: Important Safety Notes
- Let the engine cool completely before servicing. Hot coolant under pressure can cause burns.
- Protect skin and eyes from coolant. If contact occurs, flush thoroughly with water. Replace any clothing with spilled coolant immediately.
- Work in a ventilated area and dispose of coolant responsiblynever pour it down drains or onto the ground.
Tools & Supplies You’ll Need
- New coolant (refer to your manual for specific type and mixing ratio)
- Drain pan or container (at least 2 liters capacity)
- Socket or wrench for water pump cover screw (usually 6 mm or 8 mm)
- New seal ring or gasket for water pump cover (strongly recommended for this model)
- Clean funnel and rags
Step-by-Step Coolant Change Procedure
- Stand the motorcycle upright on level ground, ensuring stability with a stand.
- Remove the radiator cap. This enables the system to vent for a thorough drain. Always do this with a cool engine.
- Locate the drain screw on the water pump cover, positioned on the right side of the engine. Place your drain pan directly beneath.
- Carefully loosen and remove the water pump drain screw. Allow all coolant to drain out completely.
- Inspect the drain screw seal. GAS GAS recommends using a new seal ring for a reliable, leak-free sealfailure to replace the seal can result in leaks unique to the EX 350F design, which uses lightweight magnesium cover materials.
Position the new seal and reinstall the drain screw. Torque to factory spec: 10 Nm (±7.4 lbf–ft). - Slowly pour new coolant into the radiator filler neck. Continue until the level sits approx. 10 mm above the core, just over the radiator fins. The system capacity is about 1.2 liters (≈1.3 quarts).
- Reinstall the radiator cap
- Start the engine and let it idle briefly. Check for leaks at the drain screw and water pump cover. Shut off the bike and allow to cool fully.
- With the engine cool, remove the radiator cap again and check coolant level, topping off if needed. Replace the cap.
Special Notes for the 2022 GAS GAS EX 350F
- This model features a high-revving, performance-oriented 350cc engine that benefits from pristine coolant flowneglect can quickly lead to hot spots or premature water pump seal wear.
- Be sure to inspect the water pump radial shaft seal and cover seal at every coolant change. These are common maintenance points outlined for this model. Early replacement helps prevent leaks and engine damageespecially if you ride dusty or muddy trails regularly.
- The EX 350F design makes accessing the radiator cap and pump straightforward. However, always use caution and torque bolts to specification due to light alloy covers used for weight savings.
After You Finish
- Take a short test ride to bring the engine up to temperature.
- With the engine cool again, do a final level check. Top up coolant if needed.
- Periodically inspect for leaks, especially after your first ride and following seal replacement.
- Never mix old and new coolant types—always flush thoroughly when switching brands.
Changing coolant is a straightforward but critical maintenance task on the GAS GAS EX 350F. Use caution, use quality replacement parts, and keep your bike running strong in any riding conditions.
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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.