How to Change the Coolant in a 2024 GAS GAS MC 85
Keeping your 2024 GAS GAS MC 85 running at its best means paying attention to the cooling system. Regular coolant changes help prevent engine overheating, corrosion, and premature wear. This guide explains how to correctly change the coolant in your GAS GAS MC 85 and includes essential tips unique to this model.
Important Safety Tips
- Coolant can cause skin and eye irritation. If it comes into contact with your skin, wash immediately. If it splashes in your eyes, rinse thoroughly with water and consult a doctor.
- Do not open the radiator cap while the engine is hot—wait for the engine and coolant to cool down completely to avoid serious burns.
- Dispose of used coolant responsibly. Take it to a recycling or hazardous waste center.
Tools & Supplies Needed
- Phillips and flathead screwdrivers
- 8mm and 10mm sockets or wrench
- Drain pan
- Funnel
- High-quality, motorcycle-approved coolant
- Shop towels
- Protective gloves
Steps to Change the Coolant
- Ensure safety first: Let the bike cool completely before starting any work on the cooling system.
- Remove the radiator shrouds: Use your screwdriver to remove the bolts securing the plastic radiator shrouds, giving clear access to the cap and radiators.
- Open the radiator cap: Slowly remove the radiator cap to release any built-up pressure. Place the cap in a safe location.
- Locate the coolant drain bolt: On the GAS GAS MC 85, the coolant drain bolt is found on the lower side of the water pump cover on the right side of the engine. Position your drain pan beneath this spot.
- Drain the old coolant: Use your socket or wrench to loosen and remove the drain bolt. Allow the coolant to flow into the pan. Slightly tilting the bike side to side ensures a full drain.
- Inspect and clean: Examine the drained coolant for debris or oil—signs of bigger issues. Wipe down the area around the drain and inspect the drain bolt's sealing washer. Replace the washer if it is damaged or flattened.
- Reinstall the drain bolt: Once drained, reinstall the drain bolt and torque to the manufacturer's recommended spec (usually around 6 Nm for the MC 85—check your owner's manual).
- Refill the coolant: Use a funnel to slowly pour new coolant into the radiator until it reaches the brim. Allow some time for air bubbles to escape.
- Bleed the system: The MC 85 includes a small bleeder screw located on top of the cylinder head. Loosen this gently with a screwdriver or wrench until you see coolant flow steadily, indicating trapped air has escaped. Retighten the bleeder screw.
- Top off and check: After bleeding, check the coolant level and top off if needed. The fluid should be just below the bottom of the fill neck.
- Reinstall radiator cap and shrouds: Securely fit the radiator cap and remount the radiator shrouds.
- Run and recheck: Start the bike and let it idle for a few minutes. Check for leaks at the drain bolt, cylinder head, and around the radiator. Once cooled again, check the coolant level and adjust if necessary.
Key Notes for the 2024 GAS GAS MC 85 Owner
- The MC 85 utilizes a high-efficiency, two-radiator cooling system. Consistent coolant changes are important for high-performance two-stroke engines.
- The bike's coolant system is compact, and airlocks can occur if you skip the bleeding step. Always bleed the system after refilling to prevent overheating.
- Only use recommended, high-performance coolant. Avoid mixing different coolant types.
- Periodically inspect the radiators and hoses for damage or leaks, especially after a crash or heavy riding session.
- Consult your owner's manual for the exact coolant capacity and torque specs.
When to Change the Coolant
- At least once per year or every 20-40 hours of ride time, depending on use conditions.
- After any muddy or wet race, or if the coolant appears dirty or discolored.
- Whenever replacing major cooling system components.
Consistent maintenance is the backbone of race-winning performance. Follow this guide to keep your 2024 GAS GAS MC 85 cool and reliable on every terrain.
Related Shopping Categories
Shop Radiator Hoses for Your Ride
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.