How to Change Coolant in a 2016 Husqvarna TC85BW: MotoSport Exclusive Guide

Shop parts for a 2016 Husqvarna TC85BW Dirt Bike.

Regularly changing your coolant ensures your 2016 Husqvarna TC85BW runs efficiently – preventing overheating and internal corrosion. Follow these step-by-step instructions specifically tailored for this model.

What Makes the TC85BW Unique?

The 2016 TC85BW (“Big Wheel”) is a mini motocrosser with upsized wheels – designed for budding racers who demand serious performance. Its 2-stroke engine and compact twin-radiator system mean precise coolant maintenance is critical. Always refer to your owner’s manual for torque specs and chemical recommendations as incorrect coolant type or improper bleeding can impact engine longevity.

Tools & Supplies Needed

  • Fresh, motocross-appropriate coolant (compatible with aluminum parts; pre-mixed or mixed with distilled water)
  • Basic hand tools (socket set, screwdriver)
  • Drain pan
  • Clean funnel
  • Gloves & safety glasses
  • Shop towels

Step 1: Prep the Bike

  • Ensure the bike is completely cold before starting.
  • Position the TC85BW upright on a stand, with the radiator cap accessible.
  • Remove any body panels as needed for easier access to the radiators.

Step 2: Drain Old Coolant

  • Place the drain pan beneath the water pump cover (right side, lower engine).
  • Remove the coolant drain bolt or screw on the water pump cover; a small washer may be present—don’t lose it.
  • Open the radiator cap to allow air in & help the coolant drain completely.
  • Once drained, reinstall and securely tighten the drain bolt.

Step 3: Flush (Optional but Recommended)

  • Add clean distilled water to the radiator, reinstall the cap, and run the engine briefly to circulate.
  • Shut off the bike, let it cool, and repeat the drain process.
  • This removes any old coolant remnants or debris.

Step 4: Refill with New Coolant

  • Slowly pour new coolant into the radiator until full.
  • On the TC85BW, there may be a bleeder screw on the cylinder head–open it until coolant flows without bubbles, then tighten securely.

Step 5: Bleed & Check for Air

  • With radiator cap OFF, briefly start and idle the engine. Watch for air bubbles (the system is "burping").
  • Top up coolant as needed until the level is stable and free of bubbles.
  • Replace the radiator cap once done.

Step 6: Final Touches & Inspection

  • Double-check all fasteners/bolts for tightness.
  • Wipe away any spills. Reinstall bodywork.
  • Take the bike for a short, gentle ride; let it cool, then re-check the coolant level and top off if necessary.
  • Dispose of old coolant properly at a recycling center – never pour it down a drain or onto the ground.

Model-Specific Tips for the 2016 TC85BW

  • This model uses a radiator system nearly identical to sibling KTM and newer GasGas 85s – ensure you use a non-silicate, ethylene glycol-based coolant to protect magnesium and aluminum components.
  • The small coolant volume means even minor air pockets can cause overheating – always fully bleed the system.
  • Check hoses, clamps, and radiator fins for wear or damage during the process – heat management is crucial on 85cc race bikes.

Changing your coolant is a simple job that protects your high-performance engine and keeps your TC85BW ready for every moto.

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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.