How to change the coolant in a 2022 Sherco 250 SEF FACTORY Dirt Bike

How to Change the Coolant in a 2022 Sherco 250 SEF FACTORY

Shop parts for a 2022 Sherco 250 SEF FACTORY Dirt Bike.

Changing the coolant in your 2022 Sherco 250 SEF FACTORY is an essential maintenance task that protects your engine from overheating and corrosion. Sherco recommends using only approved coolant, never water or unapproved fluids, to prevent engine damage and ensure optimal performance. The 250 SEF FACTORY model uses a closed-circuit cooling system with an approximate coolant capacity of 1.1 liters. This guide walks you through the complete process, tailored specifically for your dirt bike.

What You'll Need

• New coolant (Sherco specifies Minerva Perma Universal D 4 or equivalent, pre-mixed to -25°C)
• Socket wrench (for drain and bleed screws)
• Drain pan
• Funnel
• Gloves and eye protection
• New gasket/seal for the radiator bleed screw (recommended for optimal sealing)

Coolant Change Instructions

1. Preparation: Place the motorcycle vertically on a stable, flat surface. Allow the engine to cool completely before starting the procedure.
2. Locate the Drain & Fill Points: The coolant drain screw is typically found at the lower part of the water pump or on the lower side of the engine casing. The radiator cap is located at the top of the radiator. The radiator bleed screw is on the left side of the radiator.
3. Drain the Old Coolant:
   • Set a drain pan under the bike.
   • Remove the radiator cap slowly to relieve any pressure.
   • Remove the drain screw from the water pump or coolant system and let the coolant completely drain into the pan. Dispose of old coolant at an approved collection center–never pour it down the drain or on the ground.
4. Install Drain Screw:
   • Once drained, inspect the drain screw and washer. Replace the washer if damaged or as a best practice.
   • Reinstall and torque the drain screw to 6Nm.
5. Bleed the System:
   • Remove the bleed screw (M6x8) on the left side of the radiator.
6. Refill Coolant:
   • Using a funnel, slowly pour new coolant into the radiator via the filler neck until coolant flows obviously (bubble-free) from the bleed screw opening.
   • Reinstall the bleed screw with a fresh gasket/seal and tighten to 8Nm.
   • Continue filling until the coolant reaches the appropriate level (approx. 1.1 liters). On this model, check the expansion container for the "LEVEL MIN" mark and fill accordingly.
7. Final Steps:
   • Reinstall the radiator cap securely.
   • Start the engine and let it idle for a few minutes to circulate coolant and release air pockets.
   • Shut off the engine, let cool, and recheck the coolant level. Top off if needed.
   • Inspect for leaks around the drain screw, bleed screw, and radiator cap.

2022 Sherco 250 SEF FACTORY Specific Notes

• This model has a compact dual-radiator system and precise cooling channel routing. Always ensure no air remains trapped during bleeding, as air pockets can compromise cooling efficiency and engine integrity.
• Use only the specified long-life coolant for compatibility with aluminum radiators and seals.
• Monitor the expansion tank level regularly, especially after the first ride post-coolant change, to confirm all air is purged.
• When replacing the water pump shaft seal or if you notice coolant leaking from the weep hole, additional disassembly and seal replacement are required—refer to workshop procedures or a qualified technician for these advanced repairs.

Properly maintaining your Sherco 250 SEF FACTORY's cooling system helps protect both engine longevity and off-road performance. For factory-spec replacement parts, coolant, seals, and tools, Shop parts for a 2022 Sherco 250 SEF FACTORY Dirt Bike.

Related Shopping Categories

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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.