How to Change the Coolant on a 2018 Husqvarna 701 Enduro

Shop parts for a 2018 Husqvarna 701 Enduro Dirt Bike.

Routine coolant changes are essential for keeping your 2018 Husqvarna 701 Enduro running at peak performance, whether you are tackling enduro trails or commuting. This guide walks you through the process, focusing on steps and details specific to this model so you can make it a MotoSport-exclusive resource for your bike care routine.

What You Will Need

  • New coolant formulated for aluminum motorcycle engines (consult your owner's manual for specifications)
  • Drain pan
  • 10 mm socket or wrench
  • Funnel
  • Clean rag
  • Safety glasses and gloves

Preparation

  • Allow the engine and radiator to cool completely before starting. The system is pressurized and hot coolant can cause serious burns.
  • Stand the bike upright on level ground, ideally using a bike stand for stability.
  • Remove the seat and any fairing panels that obstruct radiator or reservoir access.

Draining the Old Coolant

  • Locate the radiator cap (usually top right of radiator) and the coolant drain bolt (bottom right of engine case).
  • Place the drain pan under the drainage point.
  • Loosen the radiator cap first – this allows air in, preventing vacuum and ensuring full drainage.
  • Remove the coolant drain bolt using a 10 mm socket and let the coolant fully empty into the drain pan. Wait for all coolant to stop flowing before proceeding.
  • Open the reservoir cap as well for maximum flow, if equipped.

Flushing (Optional but Recommended for Complete Service)

  • For best results, flush the system by filling it with distilled water, reinstalling the drain bolt, and running the engine at idle for a few minutes – then repeat the draining process. Avoid tap water because mineral content can damage the cooling system over time.

Refilling the System

  • Reinstall the coolant drain bolt firmly, but do not overtighten (consult the manual for torque settings if possible).
  • Use a funnel and slowly pour the new coolant into the radiator until it reaches the base of the neck.
  • If your 701 Enduro is equipped with a coolant recovery (compensating) tank, fill it to the indicated level as well.

Bleeding Air from the System

  • With the radiator cap removed, start the engine and let it idle. As the engine warms, air bubbles may appear and the coolant level may drop; top off with coolant as needed.
  • Once bubbling stops and the engine reaches operating temperature, replace the radiator cap securely.
  • Check the compensating tank and add coolant to the "min" or "max" mark as specified.

Final Steps

  • Reinstall any panels or the seat you removed earlier.
  • Dispose of old coolant safely; it is toxic and cannot be poured down drains or onto the ground.
  • After your first post-change ride, recheck coolant levels when the engine is again cool. Top off if necessary.

Special Considerations for the 701 Enduro

  • The 701 Enduro features a high-compression single-cylinder engine that generates significant heat, making proper coolant level and periodic system checks especially important for reliability.
  • If you frequently ride in hot climates or challenging terrain, consider inspecting radiator hoses and the cap at each service interval for leaks or damage.
  • Always use coolant recommended for aluminum engine construction to avoid corrosion and maintain optimal heat transfer characteristics.
  • Some 701 Enduros are equipped with a radiator fan – running the engine after a refill helps ensure the thermostat opens and the fan operates normally.

Changing your coolant is straightforward but critical preventive maintenance. MotoSport helps you keep your 701 Enduro ready for every adventure – from summer rides to off-road challenges.

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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.