How to Change the Coolant in a 2024 GAS GAS EW500F
Regular coolant changes keep your 2024 GAS GAS EW500F–one of the most capable big bore four-stroke enduro bikes on the market–running cooler and protecting its advanced engine. The EW500F features a robust liquid-cooled SOHC engine and a pressurized cooling system, and using the right coolant and procedure is key to maintaining performance and reliability. Follow this proprietary MotoSport guide for a safe, mess-free coolant change specific to your EW500F.
What You Need
- Fresh manufacturer-approved motorcycle coolant (avoid automotive coolants containing silicates)
- Drain pan
- 8mm and 10mm sockets or T-handles
- Phillips/flat screwdriver (for shrouds/tank if necessary)
- Shop towels
- Funnel
- Safety gear (gloves, eye protection)
Step 1: Bike Prep
- Let the EW500F engine cool fully–hot coolant can cause burns.
- Place the bike on a stable stand and turn off the ignition.
- Wipe dust or mud off the radiator cap to prevent debris from entering the system.
Step 2: Access the Cooling System
- If needed for access, remove the seat and side shrouds to reach the radiator cap and coolant hoses.
- Locate the radiator fill cap (typically on the left or right radiator).
Step 3: Drain the Old Coolant
- Position a drain pan beneath the water pump (bolted low on the right side of the engine).
- Locate the coolant drain bolt at the lowest point on the water pump cover, usually marked or using an 8mm bolt. Loosen but do not remove it yet.
- Slowly open the radiator cap to vent pressure, then remove the drain bolt to allow coolant to flow out completely.
- If your EW500F is equipped with a coolant bleeder screw on the cylinder (consult your owner's manual for exact placement), loosen it to ensure thorough draining and air removal.
Step 4: Inspect and Clean
- Inspect the drained coolant for oil, rust, or debris, which could indicate cooling system issues.
- Check the drain bolt's sealing washer/O-ring for damage and replace if necessary for a proper seal.
Step 5: Reinstall Drain Components
- After all coolant has drained, reinstall the drain bolt and torque it to the manufacturer specification (avoid overtightening).
Step 6: Add Fresh Coolant
- Using a funnel, slowly pour new coolant into the radiator until it reaches the base of the fill neck.
- With the bleeder screw still open, add coolant until it flows steadily from the bleeder. Tighten the screw as soon as a steady flow appears, free of air bubbles. This ensures no air is trapped in the head
- Top off the radiator again if needed.
Step 7: Run and Recheck
- With the radiator cap off, briefly start the engine and let it idle for 30 seconds (watch for spills).
- This helps evacuate remaining air pockets. Stop the engine, let settle, and top off coolant as needed.
- Replace the radiator cap securely.
Step 8: Final Check
- Inspect for leaks around the water pump and drain bolt.
- Reinstall any shrouds or covers.
- After the next ride, let the bike cool fully and check the coolant level in the radiator–refill if necessary.
Special Notes for 2024 GAS GAS EW500F Owners
- This model uses a pressurized radiator cap and specific O-rings and drain bolts–always use genuine or high-quality replacements to maintain system pressure and prevent leaks.
- For extreme riding or frequent deep water crossings, inspect the coolant color and oil condition regularly–water or oil in the coolant can signal gasket trouble, which should be addressed immediately.
- Use only coolants formulated for aluminum and magnesium components found in the GAS GAS engine and radiators, as improper coolant can damage the system over time.
Routine coolant changes every 1-2 years protect your EW500F from overheating and internal corrosion. If you need replacement gaskets, O-rings, or coolant, MotoSport stocks all the essentials for the 2024 GAS GAS EW500F.
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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.