How to Change the Coolant in a 2022 GAS GAS EX 450F
Changing the coolant in your 2022 GAS GAS EX 450F is a key maintenance task for keeping your bike running at optimal temperatures and preventing internal damage. The EX 450F uses a pressurized liquid cooling system, and proper coolant maintenance is especially crucial for off-road conditions encountered with this performance model. Below is a step-by-step proprietary MotoSport guide specific for your motorcycle:
Required Tools and Supplies
- Fresh coolant formulated for aluminum engines (choose a high-quality motorcycle-specific product)
- A drain pan
- Rags or shop towels
- Socket set and screwdrivers
- Protective gloves and eye protection
Preparation
- Ensure the engine is completely cool. Never open the radiator cap or cooling system when hot due to risk of burns and pressure release.
- Place the EX 450F firmly on a stand or level surface. Secure with tension straps if needed to prevent tip-over during service.
Step 1: Remove the Seat and Plastics (If Necessary)
- Remove the seat by loosening the mounting bolts; set aside.
- If the radiator cap or hoses are obstructed by plastics, carefully remove the shrouds or tank covers. Refer to your owner's manual for location of fasteners and clips.
Step 2: Remove the Radiator Cap
- Slowly unscrew the radiator cap to release any residual pressure. Inspect the cap for wear or damage.
Step 3: Drain the Old Coolant
- Position your drain pan under the water pump drain bolt (look for a bolt at the lowest point of the pump cover on the right side of the engine).
- Remove the drain bolt and sealing washer to allow coolant to flow into the pan.
- Open the radiator or expansion tank bleed screw, if equipped, to speed up draining.
- Let coolant fully drain. Dispose of old coolant responsiblyit is toxic and harmful to the environment.
Step 4: Inspect and Clean
- Inspect the sealing washer for damage or deformities; replace if worn.
- Check radiator hoses and clamp tightness for signs of cracking, swelling or leaksreplace as needed.
- Clean any spilled coolant from the engine and frame.
Step 5: Refit the Drain Bolt
- Once fully drained, reinstall the drain bolt and sealing washer. Tighten to the recommended torquedo not overtighten, as the threads are in aluminum cases.
Step 6: Add New Coolant
- Slowly pour the new coolant into the radiator until it reaches the bottom of the filler neck. For the EX 450F, ensure you use coolant rated for modern motocross engines and not automotive fluid, as corrosion inhibitors differ.
- If your bike has a bleed screw on the cylinder head or radiator, open it while filling; close it when coolant flows steadily without bubbles, ensuring trapped air escapes.
Step 7: Bleed the Cooling System
- Gently rock the bike from side to side to help release air pockets.
- Top off the radiator if necessary.
- Reinstall the radiator cap securely.
Step 8: Final Checks
- Refit any removed plastics and the seat.
- Start the engine and let it idle. Monitor the coolant level and check for leaks at the radiator, hoses, and drain bolt.
- After the engine cools again, recheck the coolant. Top up if needed–even a small amount of air can affect performance.
Special Tips for EX 450F Owners
- The 2022 EX 450F utilizes a high-compression single-cylinder engine—stable coolant levels are critical for longevity under race or enduro stress.
- Check the radiator fins for damage or clogging, as off-road debris is common. Use a soft brush or compressed air to clean if needed.
- Always mix coolant according to the manufacturer's specification (usually a 50/50 blend with distilled water unless premixed).
- Replace coolant at least annually or every 20 operating hours in demanding environments to prevent corrosion and overheating.
Environmental and Safety Reminders
- Never dispose of coolant in drains, soil, or natural water sources. Use official recycling centers.
- Wear gloves and goggles—coolant is hazardous to skin and eyes.
Regular coolant changes protect your GAS GAS EX 450F against costly overheating and ensure it's ready for every ride, from trails to track. For all parts and maintenance tools dedicated to your 2022 EX 450F, trust MotoSport as your source for quality and convenience.
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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.