How to Change the Coolant in a 2023 GAS GAS MC250F FACTORY EDITION
Shop parts for your ride now!The 2023 GAS GAS MC250F Factory Edition is engineered for peak track performance, lightweight handling and easy maintenance. Regularly changing your coolant is essential to keep the high-revving, compact engine running at its best, avoid overheating, and extend the lifespan of internal components–especially on a factory spec bike built for racing.
Tools & Supplies Needed
- Coolant compatible with modern aluminum motorcycle engines (silicate & phosphate free)
- Drain pan
- 8mm & 10mm sockets/wrenches
- Flathead screwdriver
- T-handle wrench (recommended for plastics & bodywork)
- Torque wrench
- Funnel or coolant fill bottle
- Shop towels
- Safety gloves & eyewear
Step-by-Step Coolant Change Procedure
-
Prepare the Bike
Make sure the MC250F Factory Edition engine is cold; never open the radiator cap on a hot engine. Position the bike upright on a stand for level draining and access to bodywork. -
Remove the Shrouds (If Needed)
Using an 8mm socket or T-handle, carefully remove the radiator shrouds to expose the radiator cap and neck. This step improves access, especially if you want to inspect or flush the system. -
Open the Radiator Cap
Slowly loosen the cap with a cloth over it to release pressure. Remove completely and set aside so air flows through the system during draining. -
Locate and Remove the Coolant Drain Bolt
On the right side of the engine (just below the water pump area), use a 10mm socket to remove the coolant drain bolt. Make sure the drain pan is ready to catch the old coolant. Some MC250F FE models may use a small copper crush washer; inspect it for wear and replace if necessary. -
Allow System to Drain Completely
Tilt the bike gently side-to-side to get as much old coolant out as possible. Inspect the drained fluid for signs of contaminants or corrosion–milky or oily coolant could indicate more serious issues. -
Inspect Hoses and Clamps
Before refilling, check radiator hoses for brittleness or cracks. Confirm hose clamps are secure and free from corrosion. -
Reinstall the Drain Bolt
Clean the bolt and reassemble with the crush washer. Tighten to manufacturer spec–do not overtighten. GAS GAS engines typically use 7-10 Nm for coolant drain bolts. -
Fill with Fresh Coolant
Pour new coolant slowly into the radiator neck using a funnel until it reaches the top. The MC250F FE has a coolant capacity just under 1 quart (check the owner's manual for exact volume). -
Bleed the Cooling System
With the cap still off, lean the bike side-to-side gently, and squeeze the radiator hoses to purge air bubbles. Top off as needed. Replace the radiator cap securely when the level remains steady. -
Start the Engine & Check
Start and idle the bike for 2-3 minutes, then let it cool down. Re-check coolant level; top off if necessary. Inspect under the drain bolt and radiator area for leaks. -
Reinstall the Shrouds
Once the system is sealed and filled, reattach any bodywork previously removed. Torque bolts evenly to avoid stress on the plastics.
2023 GAS GAS MC250F FACTORY EDITION Model-Specific Tips
- All-new Motor & Chassis: The 2023 Factory Edition engine, frame and cooling components are unique compared to the standard model–expect new hose routing and improved access to drain and fill points.
- Race-Ready Radiator Protection: Factory Edition models may include Power Parts guards or braces as standard, which may require additional steps for full access.
- Crush Washer Replacement: Always inspect or replace the drain bolt washer to avoid leaks at the water pump housing.
- OEM Coolant Recommendations: Use only coolants specified for modern magnesium and aluminum engine blocks–silicate and phosphate free, with a high boiling point, to protect against corrosion and scale in small radiators.
Regular coolant maintenance is crucial for a factory-level motocrosser like the MC250F FE–keep your bike running cool so you can stay in the lead every ride.
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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.