How to Change the Coolant in a 2024 Sherco 250 SEF FACTORY
Shop parts for a 2024 Sherco 250 SEF FACTORY Dirt Bike.
Regular coolant changes are vital for the longevity and performance of your 2024 Sherco 250 SEF FACTORY. This high-performance enduro's advanced cooling system requires attention to detail during each service task. Below is a proprietary MotoSport guide built for this exact model.
What You Will Need
- Motul Motocool Factory Line -35°C or equivalent high-quality coolant recommended by Sherco
- 8 mm wrench/socket
- Replacement crush washers (for drain and bleed screws)
- Drain pan
- Clean funnel
- Shop towels
- Protective gloves & eyewear
Step-by-Step Coolant Change Procedure
- Prepare the Bike:
Ensure the engine is cold. Place the bike upright on a stable stand to avoid spills. Clean around the radiator cap, drain, and bleed screws to prevent debris contamination. - Remove the Radiator Cap:
Carefully twist off the radiator cap. If the engine is warm, allow it to cool before opening. - Locate and Remove the Drain Screw:
Find the coolant drain screw near the water pump (typically M6x45 on this model). Position your drain pan and loosen the screw, letting coolant drain completely.
Note: Replace the copper or aluminum washer on the drain screw to prevent leaks during reinstallation. Tighten to 8 Nm torque after refitting. - Flush (Optional but Recommended):
If the coolant appears contaminated, refill with distilled water and repeat the drain step to flush remaining residue. - Reinstall the Drain Screw:
Fit a new crush washer and torque the drain screw to 8 Nm as specified by the factory. - Fill With New Coolant:
Using a clean funnel, slowly pour the new coolant (approx. 1.1 liters) into the radiator filler neck. - Bleed the System:
Locate the bleed screw on top of the cylinder head. Loosen it until coolant emerges without air bubbles, then tighten it securely with a fresh washer (8 Nm).
Top up the radiator if needed. - Refit the Radiator Cap:
Ensure coolant is at the proper level, then securely fit the cap. - Run and Recheck:
Start the engine and let it idle. Watch the coolant level as it circulates and top off if necessary after the first cycle. - Final Checks:
Look for leaks at all serviced points and monitor the bike's temperature on the next ride.
Important Model-Specific Notes
- Coolant Capacity: The 250 SEF FACTORY holds about 1.1 liters of coolant. Never overfill, as expansion can force excess fluid out the overflow tube.
- Coolant Type: Use only silicate-free, aluminum-safe coolants like Motul Motocool Factory Line -35°C for optimal corrosion protection.
- Sealing Washers: This model's drain and bleed screws require new washers at each service to avoid leaks—do not reuse old ones.
- Water Pump Service Warning: If coolant is found escaping from the engine's weep hole, the water pump seal may be compromised, requiring more advanced service (not covered here).
- Torque Values: Always use a calibrated torque wrench—8 Nm for both the coolant drain and bleed screws.
When to Change Coolant
- At least once every year or 20-40 engine hours, whichever comes first.
- After deep mud, water crossings, or evidence of contamination.
Get OEM-Grade Parts & Fluids
For a perfect fit and peace of mind, use only trusted coolants, OEM gaskets, sealing washers, and other maintenance items for your 2024 Sherco 250 SEF FACTORY.
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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.