How to Change the Coolant in a 2024 Sherco 300 SE FACTORY

Shop parts for a 2024 Sherco 300 SE FACTORY Dirt Bike.

Regularly changing the coolant in your 2024 Sherco 300 SE FACTORY is crucial for peak performance and engine longevity. This guide provides step-by-step instructions unique to MotoSport.com for dirt bike owners who demand precise care and reliability from their Sherco motorcycles.

What You Need

  • Fresh, recommended coolant (compatible with aluminum systems; do not mix with other fluid types)
  • Drain pan
  • Socket set (10 mm commonly required)
  • Torque wrench
  • Clean funnel & fresh sealing washer for drain bolt
  • Safety gloves and eyewear
  • Distilled water (if flushing the system)

Instructions:

  1. Ensure the Engine Is Cool: Never attempt to drain or fill the coolant while the engine is hot. Let the bike sit until completely cool to avoid burns and system overpressure.
  2. Remove the Skid Plate (If equipped): For easier access to the drain plug, take off the skid plate and clean around the radiator and engine area.
  3. Locate and Remove the Coolant Drain Bolt:
    • Place your drain pan beneath the water pump (on the right side of the engine).
    • Using the correct socket (typically 10 mm), remove the coolant drain screw to allow the old coolant to empty completely.
    • If your coolant is contaminated, flush the cooling system with distilled water until it runs clear before refilling.
  4. Remove the Radiator Cap: Loosen the radiator cap to ensure gravity assists draining. This also prevents air blocks during refill.
  5. Inspect Components: Check hoses, clamps, and seals for wear. Replace any suspect parts now for convenience. On the 300 SE FACTORY, if you see coolant weeping from the water pump, inspect and replace the water pump seal as needed–installation requires proper tool use and attention to detail to avoid leaks or bearing failure†.
  6. Install the Drain Bolt: Fit a new sealing washer on the drain plug and reinstall it. Tighten with a torque wrench to 6 Nm which is specific to the Sherco 300 SE FACTORY. Overtightening can strip threads; use caution.
  7. Refill Coolant:
    • Using a clean funnel, pour the new coolant into the radiator until it's near the top.
    • Some air may be trapped—gently rock the bike side to side and briefly squeeze the radiator hoses to expel bubbles.
  8. Start and Warm the Engine: Start the bike and let it idle with the radiator cap off, keeping an eye on coolant level as trapped air escapes. Add coolant as necessary until the level stops dropping.
  9. Fit Radiator Cap and Inspect: Once you are certain there are no bubbles, replace the radiator cap firmly.
  10. Check for Leaks and Test Ride: Visually inspect for leaks. After a quick test ride, let the engine cool and re-check the coolant level, topping off as needed.

Notes for 2024 Sherco 300 SE FACTORY Owners

  • Always use a new paper gasket and, if necessary, a new O-ring when servicing the water pump. This model's water pump seal has a spring-facing orientation for correct installation–improper fitting leads to premature leaks†.
  • Tighten water pump housing screws to 10 Nm for optimal sealing and component longevity†.
  • This engine features high-performance internals; staying on schedule with coolant changes helps prevent overheating under extreme enduro or race conditions.

† Technical specifications referenced are unique to the Sherco Factory 300 SE, ensuring the job is done right the first time.

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Shop Tools for a 2024 Sherco 300 SE FACTORY Dirt 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.