How to Change the Coolant in a 2019 Sherco 500 SEF FACTORY

Shop parts for a 2019 Sherco 500 SEF FACTORY Dirt Bike.

Maintaining the cooling system on your 2019 Sherco 500 SEF FACTORY is key to long-term reliability and consistent performance. Changing the coolant regularly not only prevents overheating but also guards against corrosion within the cooling system. This guide will walk you through the step-by-step process, highlight tools required, and point out some model-specific notes every 500 SEF FACTORY owner should know.

Tools & Supplies Needed

  • Socket set
  • Flathead screwdriver or pliers
  • Catch pan for old coolant
  • Funnel
  • Fresh coolant compatible with aluminum engines
  • Clean rags

Preparation

  • Always work on a cold engine to prevent burns and avoid pressurized surges from the cooling system.
  • Locate your workspace – ideally outside or in a well-ventilated garage.
  • Remove the seat and fuel tank for full radiator access on the Sherco 500 SEF FACTORY. This model has dual radiators and a compact shroud, so removal is necessary for complete access to the radiator caps and hoses.

Step-by-Step Coolant Change Procedure

  1. Drain the Old Coolant
    - Place your catch pan under the radiator drain bolt or lowest hose connection.
    - Loosen the radiator cap to allow air in and help the coolant flow out freely.
    - Remove the drain bolt or lower hose from the radiator and let all coolant drain out completely.
    - Inspect the old coolant for signs of oil, debris, or excessive discoloration—these could signal other maintenance is needed.
  2. Flush the System (Optional but Recommended)
    - Reattach the hose/drain bolt temporarily.
    - Pour distilled water into the radiator neck, then drain again to clear any leftover coolant.
    - Repeat until water runs clear.
  3. Reinstall Components
    - Ensure the drain bolt/lower hose is securely reattached and all hose clamps are tight.
    - Wipe away any spilled coolant from the engine and frame.
  4. Fill with Fresh Coolant
    - Using a funnel, fill the radiator with the recommended coolant up to the base of the filler neck.
    - Gently squeeze the upper coolant hoses to help dislodge any trapped air.
  5. Bleed Air from the System
    - With the cap still off, start the engine and let it idle. This helps circulate coolant and purge air bubbles.
    - As the engine warms, continue squeezing the hoses (use gloves, as engine parts will heat up).
    - Top off coolant as needed until the level stabilizes.
    - When coolant circulation is steady and no more bubbles emerge, shut off the engine and let it cool fully. Check and top off the radiator and overflow reservoir as required.
  6. Final Checks
    - Reinstall the radiator cap, fuel tank, and seat.
    - Inspect for leaks after a short ride, and check coolant levels again once the bike is completely cooled down.

Important Notes for the 2019 Sherco 500 SEF FACTORY Owner

  • This model features a highly efficient Synerject M3C electronic injection system. Regular checks for leaks at sensors and hose junctions are wise.
  • Always use a coolant designed for aluminum engines to avoid corrosion and ensure proper system protection.
  • The cooling system's unique routing means trapped air can occur, especially after a full drain. Take extra time with the bleed process to prevent hot spots and engine overheating.
  • Check your owner's manual for precise coolant capacity and for recommended coolant specifications.
  • Never run the bike without coolant—even briefly—to avoid engine damage.

Keeping your cooling system maintained on the Sherco 500 SEF FACTORY ensures peak performance whether you're riding trails or racing. If you need parts such as hoses, radiators, or genuine Sherco coolant, MotoSport carries a full selection of OEM and aftermarket products designed for your bike.

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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.