How to Change the Coolant in a 2023 Husqvarna FE350S
Shop parts for a 2023 Husqvarna FE350S Dirt Bike.
Keeping your 2023 Husqvarna FE350S running cool is essential for performance – and routine coolant changes are a vital part of maintenance. Below is a MotoSport-exclusive step-by-step guide tailored for your model, with key tips and unique considerations for FE350S owners.
Tools & Supplies Needed
- Metric socket set (for drain bolt, typically 6mm or 8mm)
- Phillips screwdriver (for radiator cap)
- New coolant meeting Husqvarna/KTM specifications
- Drain pan
- Funnel
- Clean water (distilled if flushing system)
- Shop towels
- Torque wrench (recommended)
Changing the Coolant: Step-by-Step
- Allow the engine to cool completely. Never open the cooling system when hot – high pressure can cause burns.
- Stand the motorcycle upright on level ground. Use a stand if possible for maximum stability.
- Remove side panels for clear access to the radiator fill cap (if needed on your FE350S model).
- Remove the radiator cap by turning it counterclockwise. This helps release any pressure and allows coolant to drain freely.
- Position a drain pan beneath the water pump area. Locate the coolant drain bolt (typically on or near the water pump cover on the right side of the engine).
- Remove the coolant drain bolt and allow all used coolant to fully drain. To speed draining, gently rock the bike side-to-side. Inspect the old coolant for debris and examine the drain bolt’s sealing washer; replace it if damaged.
- (Optional) If flushing the system: Reinstall the drain bolt, fill the radiator with clean distilled water, run the engine for 1–2 minutes, then repeat the draining process to ensure thorough cleaning.
- Reinstall and torque the drain bolt. Tighten to manufacturer specification – commonly 10 Nm (7.4 lbf ft), but always confirm for your model. Use a new sealing washer if necessary.
- Slowly fill the radiator with new coolant using a funnel. Fill to just below the top of the filler neck. Be patient to avoid air pockets.
- Bleed air from the system. The FE350S does not usually have a manual bleeder screw, but after filling, gently rock the bike side to side and squeeze the radiator hoses to help air escape. Top off the radiator as needed.
- Reinstall the radiator cap securely.
- Start the engine and let it idle for several minutes. Watch for leaks, check the coolant reservoir (if equipped), and monitor the coolant level as trapped air escapes. Shut down the engine, let it cool, and recheck coolant level. Top off as needed.
- Reinstall panels and clean up any spilled coolant.
Special Considerations for 2023 FE350S Owners
- Vapor Lock & Overheating: The FE350S is known for its high-performance engine and can run hot during technical riding. Regular coolant changes and using a premium coolant (such as Engine Ice or Motorex) help prevent vapor lock and overheating.
- Coolant Recovery System: Some FE350S riders install an aftermarket coolant recovery kit to catch overflow and automatically return it to the radiator – a smart upgrade for serious off-road riding.
- Fan Function: The FE350S typically includes an electric radiator fan; ensure it cycles on during idling after the coolant change to confirm correct operation.
- Environmental Caution: Always dispose of old coolant properly as it’s hazardous to humans and wildlife.
When to Change Coolant
- Replace your coolant once per year or every 30-40 hours of riding, whichever comes first. Extreme conditions may require more frequent changes.
Stay on top of maintenance and your FE350S will reward you with reliable performance – mile after mile.
Related Shopping Categories
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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.