How to Change the Coolant in a 2015 Husqvarna TE250

Shop parts for a 2015 Husqvarna TE250 Dirt Bike.

Routine coolant changes are vital for the health and performance of your 2015 Husqvarna TE250. Not only does fresh coolant keep the engine running at optimal temperatures, but it also protects vital cooling system components from corrosion – something especially important for Husqvarna's high-performance enduro models. Here is a detailed, MotoSport-exclusive guide for a complete coolant service on your TE250.

What Makes the 2015 TE250 Unique?

  • The TE250 uses a high-revving, two-stroke engine with an aluminum radiator setup. Its cooling circuit is designed for extreme off-road conditions, so keeping the coolant in top shape prevents overheating and premature wear.
  • The radiator cap and water pump are accessible, but note that the frame design requires patience and proper handling to avoid spilling coolant onto critical electronics or connectors.
  • Use coolant formulated for aluminum engines, and never mix incompatible liquids; always perform a full flush if changing types or brands.

Step-by-Step Coolant Change Guide

  1. Preparation – What You Need
    Gather a drain pan, a socket set, pliers (for hose clamps), fresh recommended coolant (typically ethylene glycol or propylene glycol-based for Husqvarna), funnel, and clean water if you plan to flush.
    Make sure the engine is completely cool to avoid burns.
  2. Position the Motorcycle
    Place your TE250 upright on a stand to keep it level. A stable platform ensures thorough draining.
  3. Access and Drain the System
    Remove the radiator cap carefully.
    Locate the coolant drain bolt on the water pump cover (left side, near the bottom of the engine). Place a pan underneath and remove the bolt. Let the old coolant drain fully.
    Gently squeeze radiator hoses to force out as much old coolant as possible.
    Inspect the coolant: if it's rusty, milky, or contaminated, consider flushing the system with distilled water before refilling.
  4. Flush (Optional but Recommended)
    If you're switching types or the old coolant looks dirty, replace the drain bolt and pour distilled water into the radiator. Replace the cap, run the bike briefly, then shut off and repeat the drain process. Repeat until clear water runs out. Remove the bolt again to drain all water.
  5. Reassemble and Refill
    Reinstall the drain bolt (always hand-thread first to avoid cross-threading, then torque to spec).
    Pour new coolant slowly into the radiator until full. Squeeze hoses to burp out trapped air.
    If your model features a bleed screw on the radiator, open it until coolant flows freely, then close it.
  6. Check for Leaks & Final Steps
    Replace and secure the radiator cap.
    Start the engine and let it idle for several minutes, allowing the system to circulate and purge any residual air.
    Shut off the engine and let it cool. Recheck coolant levels, topping up if necessary.
    Inspect for leaks at the drain bolt, hoses, and cap as a final check.

Pro Tips & What to Watch For

  • The 2015 TE250 often uses a pressurized radiator cap – inspect it for cracks or wear at each coolant change to prevent pressure loss.
  • Never open the radiator cap when the engine is hot. Sudden exposure can cause scalding or damage to the cooling system.
  • Always dispose of old coolant properly. Most coolants are toxic and harmful to pets and the environment.
  • Check for persistent coolant level drops after the first ride, which might indicate a trapped air bubble or a small leak.

Properly maintaining the cooling system on your 2015 Husqvarna TE250 keeps you riding longer and harder, whether you're hitting trails or racing enduro events. Take your time and double-check as you go, and your bike will thank you with great performance and less risk of engine trouble.

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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.