How to Change the Coolant in a 2018 Husqvarna FC350
Shop parts for a 2018 Husqvarna FC350 Dirt Bike.
Keeping your 2018 Husqvarna FC350 running cool is vital for both performance and longevity. Regular coolant changes prevent build-up and overheating – crucial for a high-performance race-derived machine like the FC350. Here is a step-by-step, MotoSport-exclusive guide tailored for your specific bike:
What You Need
- Fresh motocross-approved coolant (check your owner's manual for specifications)
- Drain pan
- 10 mm socket or wrench
- Rags for cleanup
- Optional: Engine ice or advanced coolant for racing conditions
Step-by-Step Coolant Change
- Preparation: Place your FC350 upright and ensure the engine is cool before starting. Remove the seat and shrouds if they restrict radiator cap or drain bolt access.
- Drain the system: Put a drain pan under the water pump cover, located on the right side of the engine. Locate the drain bolt – on KTM and Husqvarna models, it's the bolt with a copper washer on the water pump cover. Loosen the radiator cap to relieve pressure, then remove the drain bolt and let all coolant flow out.
Tip: Open the bleed bolt (usually on the cylinder head or top of the radiator) to help draining and avoid airlocks. - Flush (recommended): For a thorough job, pour distilled water into the radiator, then run the engine briefly (with the radiator cap back on). Shut off, let cool, drain again.
- Inspect and replace: Check hoses, clamps, and the radiator cap for wear. The FC350's compact chassis means radiator damage during off-road use is common, so inspect for bent fins or leaks. Replace any tired parts now for reliability.
- Refill: Reinstall and tighten the drain bolt (do not overtighten). Use your funnel to slowly pour in the recommended amount of coolant (the 2018 FC350 typically takes about 1.1 liters, but always check your manual for your MMY). Fill to the base of the fill neck.
- Eliminate air: With the bike upright and the radiator cap off, briefly start and idle the engine. Watch for bubbles – that's trapped air escaping. Once bubbles stop, shut off, top up coolant, and reinstall the radiator cap.
- Check for leaks: Ensure the drain bolt and all hose connections are dry. Go for a short, gentle ride, let the bike cool, and recheck your coolant level.
2018 FC350 Model-Specific Tips
- Cooling capacity: The FC350 shares architecture with KTM's 350 SX-F, so many aftermarket parts – like oversize radiators or reservoir kits – interchange seamlessly for enhanced cooling.
- Watch for overheating: This model can run hot in tight conditions. If you ride slow trails, consider adding an auxiliary fan or increasing coolant capacity with proven aftermarket reservoir kits specially designed for the platform.
- Seals and gaskets: The factory water pump seal and radiator cap are key points for leaks after coolant service. Replace aging seals for worry-free riding.
Keep your FC350 ready for the gate drop – and beat the heat on every ride. For all your Husqvarna parts and upgrades, MotoSport is your starting line.
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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.