How to Change the Coolant in a 2013 Husqvarna WR250

Shop parts for a 2013 Husqvarna WR250 Dirt Bike. Changing the coolant in your 2013 Husqvarna WR250 is a fundamental maintenance task that protects your engine from overheating and corrosion. This dirt bike is renowned for its performance and reliability, but regular coolant changes are critical to preserve the magnesium engine components and maintain proper cooling under aggressive riding. Below is a MotoSport-exclusive, step-by-step guide to refreshing your coolant:

1. Preparation & Safety

  • Allow the engine to cool completely before starting to avoid burns.
  • Position the bike upright or on its side stand to help the system drain effectively. – the sidestand position may promote more thorough drainage for this model.
  • Gather a drain pan, a funnel, gloves, safety glasses, and your preferred compatible motorcycle coolant.

2. Remove the Radiator Cap

  • Open or remove the radiator cap to release pressure and allow air flow during draining.
  • If your WR250 has a coolant overflow reservoir, remove that cap too for improved flow.

3. Drain the Coolant

  • Locate the water pump at the lower right side of the engine case.
  • Find the coolant drain bolt underneath the water pumpplace a drain pan underneath and remove the bolt to release old coolant.
    Note: On this specific Husqvarna, removing the drain bolt entirely is crucial for rapid draining. – a common quirk with this generation WR250.
  • Lean the bike gently if needed to ensure as much coolant as possible exits the system.

4. Flush (Optional but Recommended)

  • If switching coolant types or after heavy use, flush the system for best results.
  • Temporarily reinstall the drain bolt and fill the radiator with distilled water only. Start the engine briefly, then shut off and drain again.
  • Repeat until only clean water escapes.

5. Reinstall the Drain Bolt

  • Double-check the drain bolt washer and threads for wear. Reinstall and tighten the bolt to manufacturer specifications to avoid leaks.

6. Add New Coolant

  • Slowly fill the radiator with fresh, compatible coolant, using a funnel to prevent spills.
  • Fill to just below the filler neck.
  • If equipped, fill the overflow reservoir up to the "full" mark.

7. Bleed the System

  • Tilt the bike from side to side and gently squeeze the radiator hoses by hand to help remove trapped air bubbles.
  • Leave the radiator cap off. Start the engine and let it idle briefly to help purge air. Watch for rising coolant level as bubbles escape.
  • Top up coolant if the level drops.

8. Reinstall Radiator Cap and Check for Leaks

  • Once you're confident the system is air-free, reinstall the radiator cap securely.
  • Re-inspect around the drain bolt and hose connections for leaks.

9. Heat Cycle and Final Top-Off

  • Run the engine until it reaches operating temperature to fully circulate the coolant.
  • Let the bike fully cool, then recheck and top off the coolant level at both the radiator and overflow reservoir, if needed.

2013 WR250-Specific Notes

  • This two-stroke's cooling passages are narrow, so being thorough with flushing and bleeding is critical to avoid hotspots.
  • Beware of overtightening the drain or radiator cap on magnesium cases to prevent thread damage.
  • If you see repeated coolant loss, especially after a change, closely inspect hoses and the water pump for wear – this can be a known maintenance point on older WRs.
Proper coolant maintenance keeps your 2013 Husqvarna WR250 running cool, reliable, and race-ready no matter the heat or riding intensity. For all parts and fluids, MotoSport has what you need to get the job done right.

Related Shopping Categories

Shop Radiators for a 2013 Husqvarna WR250 Dirt Bike.

Shop Coolant for a 2013 Husqvarna WR250 Dirt Bike.

Shop Temperature Sensors for a 2013 Husqvarna WR250 Dirt Bike.

Shop Tools for a 2013 Husqvarna WR250 Dirt Bike.

Shop Radiator Hoses for a 2013 Husqvarna WR250 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.