How to Change the Coolant in a 2022 Sherco 250SEF-R

Shop parts for a 2022 Sherco 250SEF-R Dirt Bike.

Changing the coolant in your 2022 Sherco 250SEF-R is a crucial maintenance step to safeguard your engine's reliability and performance – especially if you ride in tough off-road conditions. This guide, built specially for MotoSport.com readers, outlines the correct procedure and also highlights model-specific notes you won't find elsewhere.

What You'll Need

  • Approved coolant (Minerva Perma Universal D 4 -25°C or equivalent, as specified by Sherco)
  • Drain pan
  • Socket set (including 10mm as needed for water pump access)
  • Replacement gasket or washer for the bleed screw
  • Torque wrench
  • Protective gloves and rags

Step-by-Step Coolant Change

  1. Preparation:
    • Ensure the bike is completely cool to avoid burns.
    • Place the bike upright on a level surface for accurate draining and filling.
    • Position a drain pan beneath the engine.
  2. Drain Old Coolant:
    • Locate the coolant drain screw at the lowest point of the cooling system (check left side of water pump area).
    • Remove the radiator cap to vent the system.
    • Remove the drain screw and allow all coolant to flow into the pan.
    • Pro tip: For thorough draining, lean the bike gently side to side after most coolant has drained.
    • Clean and inspect the drain screw; replace the gasket or washer if needed.
    • Reinstall the drain screw and tighten to 6Nm torque.
    • Dispose of coolant responsibly at an approved collection center.
  3. Fill New Coolant:
    • Remove the radiator bleed screw on the left side (M6x8; torque to 8Nm when reinstalling).
    • Slowly pour new coolant into the radiator fill neck. Fill until liquid seeps from the bleed screw – this ensures trapped air is expelled.
    • Once coolant flows steadily without bubbles, reinstall the bleed screw with a new gasket.
    • Continue gradually filling until coolant reaches the LEVEL mark in the expansion tank. Total capacity is approximately 1.1 liters.
  4. Final Steps:
    • Refit the radiator cap securely.
    • Start the engine and let it idle for a few minutes. Observe coolant level and check for leaks at all fasteners.
    • Let the bike cool down, re-check the fluid level, and top off as needed.

Model-Specific Notes for Sherco 250SEF-R Owners

  • Do not replace coolant with plain water or non-approved fluids. This can cause irreversible engine damage and is specifically cautioned in the owner documentation.
  • The radiator bleed screw is critical to preventing airlocks – always use a fresh gasket to prevent leaks.
  • Visual inspection tip: While changing coolant, check hoses and connections for signs of wear or corrosion. The Sherco 250SEF-R's high-performance engine relies on optimal cooling during demanding rides.
  • If you notice any leaking from the weep hole under the water pump, the internal seal could be failing – which requires more advanced disassembly, including clutch housing removal, and is best addressed promptly to prevent engine damage.
  • Capacity Reminder: The system holds just over a liter of coolant, so avoid overfilling.

Keep Your Sherco Running Cool

By following this OEM-based procedure, you–and your 2022 Sherco 250SEF-R–can handle the most demanding trails with confidence, knowing your bike's cooling system is serviced and protected. If you need replacement gaskets, approved coolant, or tools, MotoSport.com has everything required to get the job done right.

Related Shopping Categories

Shop Radiators for a 2022 Sherco 250SEF-R Dirt Bike.

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Shop Tools for a 2022 Sherco 250SEF-R Dirt Bike.

Shop Radiator Hoses for a 2022 Sherco 250SEF-R Dirt Bike.

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.