How to Change the Coolant in a 2023 GAS GAS MC 350F
Maintaining the cooling system on your 2023 GAS GAS MC 350F is an essential part of keeping your engine running cool – especially under hard motos or trail rides. Regular coolant changes ensure optimal performance, prevent overheating, and protect the internal engine from corrosion. Follow this step-by-step MotoSport guide for a clean, professional coolant change specific to your MC 350F.
What You–ll Need
- Fresh coolant compatible with aluminum motocross radiators
- Screwdriver or ratchet for drain bolt (check the service manual for exact size)
- Drip pan or container for old coolant
- Gloves & shop towels for safety and easy clean-up
Proprietary GAS GAS MC 350F Notes
- The MC 350F features a high-performance, closed-system radiator with easy-access drain and filler points, making coolant changes straightforward compared to some older models.
- Bleeding air: This bike is equipped with a dedicated bleed screw at the top of the cylinder head. Ensuring all air is purged from the system is essential for consistent cooling.
- Capacity: The total coolant capacity is approximately 1.2 liters (1.3 quarts). Always use coolant safe for aluminum engine components and with antifreeze properties suitable for your riding climate.
Step-by-Step Coolant Change Process
-
Prep your MC 350F
Start with the engine completely cool and the bike standing upright. Removing the radiator shrouds isn–t strictly required but can provide better access. -
Drain the old coolant
Place your drip pan under the water pump cover on the right side of the engine. Remove the water pump cover bolt – this is your drain bolt. Allow all old coolant to flow into the pan. Inspect the old coolant for debris or oil contamination (signs of possible engine issues). -
Replace and torque the drain bolt
Install the drain bolt with a new seal ring if available. Tighten to spec: 10 Nm (7.4 lbf–ft). Over-tightening can damage the threads or gasket. -
Refill with new coolant
Remove the radiator cap. Slowly pour coolant into the radiator until it reaches about 10 mm (0.39 in) above the radiator fins. -
Bleed the cooling system
Locate the small bleed screw on top of the cylinder head. Crack this open slightly while topping off coolant until only fluid – not air bubbles – escapes. Retighten the bleed screw. -
Top off and reassemble
Add coolant as needed to bring the level back up to spec. Reinstall the radiator cap securely.
Refit any plastics or covers removed for access. -
Check and retest
Start the bike and let it idle briefly. Watch for leaks and ensure the fan cycles if equipped. After a short engine run, let the bike cool and recheck the coolant level, topping off if necessary.
Expert Tips for the 2023 GAS GAS MC 350F
- Use only recommended coolants designed for modern motocross engines to prevent aluminum corrosion and provide freeze protection.
- If you ride in extreme conditions, consider inspecting coolant and system components more frequently.
- Never open the radiator cap when the engine is hot – pressure and heat can cause serious burns.
- Dispose of old coolant responsibly according to local regulations. Do not pour it down drains or onto the ground.
The 2023 GAS GAS MC 350F stands out for its accessible maintenance and rugged cooling system design, ensuring your race or ride stays cool even when the action heats up.
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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.