How to Change the Coolant in a 2023 GAS GAS MC 50
Changing the coolant in your 2023 GAS GAS MC 50 is vital for maintaining optimal engine performance and protecting critical internal components from overheating and corrosion. This guide delivers step-by-step instructions tailored specifically for the MC 50, including essential details unique to this model that every owner should know.
Tools & Materials Needed
- Socket wrench set (including 6 mm and 10 mm sockets)
- Drain pan
- Fresh coolant suitable for dirt bikes (consult your owner manual for recommended type)
- Clean rags
- Protective gloves
Preparation – Safety First
- Ensure the engine is completely cool before starting. Working with a hot cooling system can result in serious burns.
- Wear protective gloves and eyewear.
- If coolant spills onto your clothing, change immediately and rinse affected skin with plenty of water.
If coolant contacts your eyes, flush them thoroughly with water and seek medical attention.
Step 1: Access the Cooling System
- Place the motorcycle upright on stable ground.
- Remove any bodywork necessary to access the radiator cap and water pump area as outlined in the MC 50 manual.
Step 2: Drain the Old Coolant
- Position a drain pan beneath the water pump cover.
- Remove the drain screw (usually a 6 mm or 8 mm bolt on the water pump cover) and allow all coolant to fully drain.
Tip: Loosen & remove the radiator cap to let air in – this will speed up the draining process. - Inspect and replace the sealing ring on the drain screw if worn.
- Reinstall the drain bolt and torque to factory specification: 6 Nm (4.4 lbf ft) for most MC 50 models.(Always consult the manual for confirmation.)
Step 3: Refill with Fresh Coolant
- Pour new coolant into the radiator until it sits approximately 10 mm above the radiator fins.
For the 2023 MC 50, total coolant capacity is 0.7 liters (0.7 qt.). Do not overfill. - If your model features a bleed screw on the cylinder (verify by visual inspection), loosen it slightly during filling to allow trapped air to escape, then retighten after coolant drips out smoothly.
Step 4: Air Purging & Final Checks
- Briefly start the engine with the radiator cap off and let it run at idle for 20–30 seconds to circulate coolant and purge remaining air pockets.
- Shut off the engine and top off the cooling system as needed.
- Reinstall the radiator cap securely.
- Check surrounding areas for leaks and wipe away any spills promptly.
Noteworthy Details for 2023 GAS GAS MC 50 Owners
- Small cooling system volume: Due to its compact engine, even minor coolant loss can risk overheating – regularly check your coolant level throughout riding season.
- Use only manufacturer-approved coolant: The MC 50's lightweight, high-revving two-stroke engine relies on quality coolant for both freeze and boil-over protection.
- Inspect hoses and seals with every service: With off-road riding, vibration and movement can affect hose clamps and seals. Address any signs of leaks or aging immediately.
- Do not mix different coolant types: If switching brands or formulas (such as to a propylene glycol-based coolant), thoroughly flush the entire system before refilling.
Final Tip
Proper maintenance of your 2023 GAS GAS MC 50 cooling system ensures maximum performance and engine longevity. If in doubt or if you encounter any coolant leaks that persist after service, consult a MotoSport-certified technician for assistance.
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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.