How to Change the Coolant in a 2009 Husqvarna TE510

Shop parts for a 2009 Husqvarna TE510 Dirt Bike.

The 2009 Husqvarna TE510 is a high-performance dirt bike, designed with a liquid-cooled, double radiator system and electric fan for efficient engine temperature control. Timely coolant changes protect vital engine parts and maximize cooling efficiency. Follow this proprietary MotoSport guide for best results and model-specific tips.

What You Will Need

  • New coolant (engine-specific, never mix typesuse a glycol-based formula designed for off-road use)
  • Drain pan
  • Rags and gloves
  • Socket set and screwdriver
  • Distilled water for flushing (optional but recommended)
  • Torque wrench

Preparation

  • Allow the engine to cool completely before starting—opening a hot cooling system can cause scalding injuries and loss of coolant through evaporation or sudden pressure release.
  • Place the bike securely on a stand so it stays level throughout service. This ensures a thorough drain and proper refill.

Draining the Old Coolant

  • Remove the radiator cap to release any residual pressure in the system.
  • Locate the coolant drain bolt on the water pump housingusually on the lower right side of the engine. Place your drain pan underneath.
  • Loosen the drain bolt as well as the lowest radiator hose clamp if equipped. Allow all coolant to drain completely.
  • If desired, flush the system with distilled water to remove old residues. Fill with water, run the engine briefly (with radiator cap off), then drain again. Repeat until the drained water runs clear.

Inspect and Reassemble

  • Inspect the radiator hoses, clamps, and drain bolt washer for wear or damage. Replace any questionable parts to guard against leaks and ensure reliable cooling performance.
  • Reinstall the drain bolt and securely tighten it using a torque wrench per Husqvarna specifications.

Filling with New Coolant

  • Slowly pour new coolant into the radiator neck until the level reaches the base of the neck. Allow trapped air to escape by gently squeezing the upper radiator hose.
  • Reinstall the radiator cap.
  • If the TE510 is equipped with a coolant reservoir tank, fill it to the indicated "full" mark.

Bleeding the Cooling System

  • Start the engine and let it idle. Watch for air bubbles escaping into the overflow tank or through the radiator neck if the cap is off (keep your face and hands clear).
  • Allow the engine to heat up to normal operating temperature so the thermostat opens, which circulates coolant through the entire system. Turn the engine off and let it cool completely.
  • Check coolant levels and top up as needed. Repeat the process if the level drops after the initial ride—some air pockets may purge out after the first heat cycle.

Special Notes for the 2009 Husqvarna TE510

  • This bike uses an electronic fuel injection system (MIKUNI D42 throttle body) and a liquid-cooled, dual-radiator setup with an electric fan. Thoroughly check for trapped air during bleeding—the fan relies on correct coolant flow for sensor operation.
  • Never use straight tap water or automotive coolant designed for cars; always use a motorcycle-specific, non-silicate coolant to prevent corrosion in the magnesium water pump housings used on this engine.
  • Check the radiator fins for obstructions and gently brush out dirt or debris, ensuring peak airflow after every coolant change.

Disposal and Final Checks

  • Safely dispose of old coolant at a local hazardous waste facility.
  • Reinstall all components, inspect for leaks, and ensure the cooling fan cycles on after a hot idle, confirming correct temperature sensor function.

Routine coolant changes on your 2009 Husqvarna TE510 ensure reliable riding in all conditions. For replacement parts, tools, and high-performance coolant, MotoSport covers everything you need—from radiators to hoses and more.

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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.