How to Change the Coolant in a 2025 Sherco 250 SE FACTORY

Shop parts for a 2025 Sherco 250 SE FACTORY Dirt Bike.

Keeping the coolant fresh in your 2025 Sherco 250 SE FACTORY is essential for maintaining optimal engine temperature and preventing overheating – especially with this model's updated, high-revving powerplant and new frame enhancements. Below is an exclusive MotoSport.com step-by-step guide tailored specifically for your Sherco's design and needs.

What You Need

  • Motul® Motocool Factory Line -35°C or approved coolant (about 1.1 liters)
  • 6mm Allen wrench
  • Torque wrench
  • Catching tray
  • Shop towels
  • New drain plug crush washer (recommended)

Important Notes for the 2025 Model

  • This Sherco features new rubber damping under the tank and tool-saving fasteners. Use care when removing panels to avoid damaging the tank support or bolt holes.
  • The 2025 250 SE FACTORY uses a 10-liter fuel tank; ensure your bike is secure and fuel is turned off before working near the cooling system—coolant spillage can damage painted or electrical components.
  • Only use approved coolant solutions; do not substitute water or non-recommended fluids as this may damage engine and cooling system components.

Step-by-Step Coolant Change Instructions

  1. Allow Engine to Cool Completely. Never open the radiator cap on a hot engine.
  2. Remove the Skid Plate or Side Panels (if necessary) to access the coolant drain plug and radiator cap per the new 2025 frame design.
  3. Open the Radiator Cap. Place your bike on its side stand to help air escape as you drain.
  4. Locate and Remove the Coolant Drain Bolt. The drain plug is typically found on the lower right side of the water pump. Use a 6mm Allen wrench and set a tray beneath to catch old coolant.
  5. Inspect and Replace the Drain Plug Washer. Replace the crush washer to prevent leaks if it is worn or flattened. Tighten the plug to 8 Nm upon reinstallation.
  6. Flush (Optional but Recommended). Add a small amount of clean, distilled water to the system, reinstall the plug, run the bike for a moment, then repeat the drain process to remove any debris or old coolant. Never use tap water.
  7. Refill with Fresh Coolant. Pour Motul® Motocool Factory Line -35°C slowly into the radiator until the level reaches the filler neck. Capacity is about 1.1 L for this model.
  8. Bleed the Air. Tilt the bike side-to-side to help trapped air escape. Some models provide a bleed screw (consult your owner's manual): loosely open, wait for bubbles to stop, and retighten with a new washer to 8 Nm.
  9. Check Level and Reinstall the Radiator Cap. Once coolant is at the correct level, replace and secure the radiator cap.
  10. Run the Engine Briefly. Let the bike idle until it warms up. Shut off and check coolant level again; top off if necessary.

Test and Inspect

  • Double-check for leaks at the drain plug, bleed screw, and hose connections.
  • Examine coolant color: any oil or excessive discoloration could indicate a deeper engine issue.
  • Inspect the new airbox and tank layouts (unique to 2025) after reassembly to ensure nothing is pinched or rubbing.
  • Reset your maintenance log to track the next coolant change interval.

Tips to Maximize Your 2025 Sherco 250 SE FACTORY's Cooling System

  • Check coolant levels frequently during the break-in of the new, higher-revving engine.
  • Replace coolant regularly, not just when the bike overheats.
  • Avoid pressure washing radiator fins – these are vital for cooling performance.

This guide was crafted exclusively for MotoSport.com customers. Keeping your Sherco's coolant fresh ensures reliability, performance, and fun on every ride.

Related Shopping Categories

Shop Radiators for a 2025 Sherco 250 SE FACTORY Dirt Bike.

Shop Coolant for a 2025 Sherco 250 SE FACTORY Dirt Bike.

Shop Temperature Sensors for a 2025 Sherco 250 SE FACTORY Dirt Bike.

Shop Tools for a 2025 Sherco 250 SE FACTORY Dirt Bike.

Shop Radiator Hoses for a 2025 Sherco 250 SE FACTORY 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.