How to Change the Coolant in a 2019 Husqvarna TE150

Shop parts for a 2019 Husqvarna TE150 Dirt Bike.

The 2019 Husqvarna TE150 is a lightweight, high-performing two-stroke enduro famed for its agility & precise handling on technical terrain. Keeping its coolant fresh is key to optimal engine performance and long-term reliability. Here is a proprietary MotoSport guide to performing a full coolant change on your TE150:

Preparation

  • Allow the engine to cool completely before starting the coolant change to prevent burns.
  • Position the bike level on a stand for thorough draining.
  • Gather supplies: fresh recommended coolant, a drain pan, a socket for the drain bolt, a funnel, and, optionally, a new washer for the drain bolt.

Draining the Coolant

  • Locate and remove the coolant drain bolt (usually found at the water pump housing on the right side of the engine). Place your drain pan below to catch used coolant.
  • For best drainage, remove the radiator cap after loosening the drain bolt. Opening the cap allows air into the system, ensuring full coolant evacuation–removing the cap first will cause minimal coolant flow until air is introduced.
  • If equipped, disconnect any hoses that may impede draining and move them aside carefully.

Inspect & Service Drain Bolt

  • Inspect the drain bolt washer and replace it with a new one if worn. This ensures a proper seal when re-tightened and prevents leaks.

Flushing (Optional, but Recommended)

  • With the drain bolt out, flush the system using distilled water for a thorough clean. Fill the radiator, let it drain completely, and repeat if needed. Avoid using tap water to prevent mineral buildup.

Refilling the System

  • Reinstall the drain bolt (with fresh washer if possible) and tighten it securely, taking care not to over-torque.
  • Slowly pour the recommended coolant into the radiator up to the specified level. Use a funnel to avoid spills.
  • Replace the radiator cap.

Bleeding & Final Checks

  • Tilt or gently rock the bike side to side to help release trapped air pockets in the system.
  • Start the engine and let it idle for a few minutes. Briefly rev and watch for bubbles escaping into the overflow, indicating air is working out.
  • Shut off the engine, let it cool, and re-check the coolant level. Top off as necessary.

2019 TE150 Model-Specific Tips & Notes

  • Pay attention to the location of all hardware and hoses during removal to ensure correct reinstallation–losing small locating pins in the engine is a known risk on this model.
  • Coolant level is best checked with the bike absolute vertical; a slightly tipped bike can give a false reading.
  • This model uses a compact two-stroke engine—never use coolant types incompatible with aluminum cooling passages or mag cases.
  • If you ride in very cold or hot climates, check your coolant type is rated for the expected temperature range to prevent freezing or boil-over.

Troubleshooting

  • If you notice persistent bubbling or coolant disappearing after several heat cycles, inspect for leaks or a possible blown gasket.
  • Always discard used coolant responsibly; it is toxic and should not be poured down drains or onto soil.

Routine coolant changes on your 2019 Husqvarna TE150 will keep your engine running cooler and protect vital components on every ride. For top-quality OEM and performance parts, rely on MotoSport.com to keep you out front on the trail.

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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.