How to Change the Coolant in a 2014 Husqvarna FC350

Shop parts for a 2014 Husqvarna FC350 Dirt Bike.

A well-maintained cooling system ensures your 2014 Husqvarna FC350 stays strong on the track or trail, preventing engine overheating and long-term damage. Regular coolant changes help protect your engine from corrosion and maximize performance, especially with the high-revving nature of the FC350's four-stroke engine. Here's MotoSport's step-by-step procedure to flush and refill your FC350's cooling system, along with model-specific tips every FC350 owner should know.

Step 1 – Prepare the Bike

  • Let the engine cool completely before starting. A hot cooling system is under pressure and can cause injuries when opened.
  • Stand the bike upright on a level surface with a drain pan underneath the engine to catch all old coolant.
    Remove any bodywork or skid plate blocking access to the radiator and water pump cover.

Step 2 – Relieve Pressure and Remove the Radiator Cap

  • Twist off the radiator cap slowly to release any internal system pressure. The radiator cap is on the top left radiator when facing the front of your FC350.

Step 3 – Drain the Old Coolant

  • Locate the drain bolt on the water pump cover on the lower right side of the engine. This bolt has a copper washer – use a 10 mm socket to remove it.
  • Allow all coolant to pour into your drain pan.
  • If desired, stand the bike on its side stand to ensure complete drainage of the radiators and engine passages.
    For thorough flushing, reinstall the drain bolt temporarily, fill the system with distilled water, then repeat the drain step.

Step 4 – Inspect Components and Close the System

  • Check the copper washer on the drain bolt and replace it if damaged. Reinstall and tighten the drain bolt to 10 Nm (7.4 lbf ft).
  • Inspect the radiator cap and filler neck for corrosion or debris, cleaning as necessary.

Step 5 – Refill with Fresh Coolant

  • Pour manufacturer-recommended coolant (ready-mixed or 50/50 mix of antifreeze and distilled water) into the radiator until the coolant reaches the filler neck.
  • Never mix different coolant types. Use only distilled water for mixing to prevent mineral buildup and corrosion.

Step 6 – Bleed the System

  • Start the engine briefly (with the radiator cap off) and firmly rock the bike side to side and gently rev to burp air from the system.
  • Stop the engine, top off coolant as needed, and reinstall the radiator cap securely.
  • Wipe away any spills and ensure there are no leaks at the drain bolt or around the radiators after warming up the engine fully.

Model-Specific Tips for the FC350

  • The FC350 is designed for high-performance riding with a lightweight aluminum chassis – engine heat is common, especially in slow or technical riding. A clean, full cooling system is critical for preventing boil-over.
  • Factory coolant choices may vary – always check your owner's manual for type and capacity. Most 2014 FC350s take approximately 1.2 liters (1.27 quarts) of coolant.
  • If your FC350 has electric fan kits or aftermarket radiator guards, ensure they do not hinder airflow or coolant filling/draining.
  • Always use the correct coolant to avoid damage to magnesium and aluminum cooling system components.

Environmental Disposal

  • Collect and dispose of all old coolant according to local regulations. Never pour used coolant on the ground or down household drains.

Routine coolant changes are a key part of the Husqvarna FC350's maintenance – keep your engine running cool so you can focus on the ride. For replacement coolant, parts, and accessories made for your 2014 FC350, Shop parts for a 2014 Husqvarna FC350 Dirt Bike.

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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.