How to Change the Coolant in a 2017 Husqvarna TE250

Shop parts for a 2017 Husqvarna TE250 Dirt Bike.

Changing the coolant is key in maintaining optimal engine temperature and protecting your Husqvarna TE250 against overheating and corrosion. The TE250 benefits from regular coolant changes – especially if you ride aggressively, in muddy terrain, or through seasonal temperature swings. Follow these proprietary MotoSport steps tailored to your 2017 Husqvarna TE250.

What Makes the 2017 TE250 Cooling System Unique?

  • Premix two-stroke engine: The TE250 uses a carbureted two-stroke powerplant with a unique cylinder head cooling passage. This makes air venting at refill time especially crucial.
  • Valuable sensor placement: Key sensors for the ignition and electronics run close to the cooling system. Take care not to spill fluid onto connectors.
  • Pressurized cap and overflow tank: The radiator features a pressurized cap with an adjacent overflow bottle. Always check both when servicing.

Required Supplies

  • Fresh, motorcycle-specific coolant
  • Socket set or 8mm wrench (or as needed for drain bolt)
  • Drain pan
  • Funnel
  • Clean rags
  • Protective gloves and eyewear

Drain the Old Coolant

  1. Let the engine cool – never attempt coolant service on a hot bike.
  2. Stand the bike upright on a level surface or use a work stand. This ensures complete draining and refilling.
  3. Remove the radiator cap carefully to allow system pressure to escape.
  4. Locate the coolant drain bolt on the water pump cover (bottom right of the engine). Place a drain pan directly beneath.
  5. Remove the drain bolt and allow the coolant to completely drain. Remove the lower radiator hose clamp if needed for complete emptying.
  6. Inspect the drained coolant. If you see excessive debris or oil, further inspection is advised before refilling.

Flush the Cooling System (Recommended)

  1. Reinstall the drain bolt temporarily.
  2. Fill the system with distilled water and let it drain to flush out contaminants. Repeat until clear.
  3. Remove the drain bolt again to fully empty the flush water, then reinstall and torque gently by hand.

Refill with Fresh Coolant

  1. With the bike vertical, fill the radiator with fresh coolant until it reaches the lower edge of the filler neck. Use a funnel for precision.
  2. Check and fill the overflow/compensating tank to the designated "MIN" and "MAX" marks—not all models will have a visible tank, but most TE250s after 2017 include one.
  3. Temporarily refit the radiator cap loosely.
  4. Start the engine and let it idle for 2–3 minutes. Watch for air bubbles in the radiator if the cap is off. Squeeze upper and lower hoses to help purge trapped air.
  5. Stop the engine and allow to cool slightly. Top off the radiator if needed, then securely fit the cap.
  6. Final check: After a short ride, allow the bike to cool and re-check coolant levels in both radiator and overflow bottle—top off as needed.

Special Notes for TE250 Owners

  • Avoid mixing coolant types – always fully flush system when changing brands or types to prevent chemical reaction and deposits.
  • Torque the drain bolt to manufacturer spec to prevent stripping the alloy water pump cover.
  • If coolant ever appears milky, inspect for oil leaks into the cooling system.
  • Always check for external leaks along hoses and at the cylinder head after your first ride.
  • Wear gloves and wash with soap if coolant contacts skin; change clothes if coolant spills to protect from irritation.

Expert Tip

The Husqvarna TE250 uses a relatively small cooling system, so small changes in coolant level can have a big impact. Always take your time burping trapped air out, and check levels once more after your first hard ride.

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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.