How to Change the Coolant in a 2022 Husqvarna FE350HQ: A MotoSport Guide
Shop parts for a 2022 Husqvarna FE350HQ Dirt Bike.
Regularly changing the coolant on your 2022 Husqvarna FE350HQ is key for keeping your engine running cool – and for protecting those high-performance components from internal corrosion. As a premium dual-sport machine, the FE350HQ features an advanced cooling system that can suffer if neglected or filled with low-quality fluids. This MotoSport-exclusive guide shows you exactly how to swap the coolant at home, along with expert notes every FE350HQ owner should know.
Why Change the Coolant on Your FE350HQ?
Coolant breaks down over time, which can lead to corrosion, overheating, or even head gasket failure. Keeping your cooling system fresh ensures optimum performance whether you ride street, trail, or open desert.
Tools & Supplies
- Correct specification pre-mixed coolant (check your manual for compatibility)
- Basic tool kit including 6mm Allen and 10mm socket
- Drain pan
- Shop rags and gloves
- Funnel
- New crush washer for drain bolt (recommended)
Step-by-Step Coolant Change Process
- Ensure the engine is cool. Place your FE350HQ upright on a level surface.
- Remove the right side shroud as needed to access the radiator and cap.
- Take off the radiator cap slowly to release any residual pressure.
- Locate the water pump cover drain bolt on the right side of the engine, just below the radiator hose junction.
- Place your drain pan under the bolt and remove the bolt using a 6mm Allen or 10mm socket. Allow all coolant to drain fully.
Tip: Slightly lean the bike left to help the system fully empty, as both radiators need to drain. - If you notice any sludge or discoloration, consider flushing the system by refilling with distilled water, running the engine briefly (without the radiator cap), and draining again.–1,2
- Replace the drain bolt with a new crush washer and torque it to 10 Nm (7.4 lbf–ft).
- Refill the radiators slowly with fresh coolant, using a funnel. Fill up to the radiator neck and check the auxiliary tank if equipped.
Note: The FE350HQ cooling system is precise – don't use straight water or car antifreeze. Stick with race-grade, aluminum-compatible motorcycle coolant for best performance. - Start the engine and let it idle for several minutes with the radiator cap removed. This allows air bubbles to escape. Blip the throttle a few times to help purge the system.–1,2
- Turn off the engine and top off the coolant as needed. Replace the radiator cap tightly.
- Check for leaks and wipe any spilled coolant.
- Reinstall the shroud and go for a quick 5-minute ride, allowing the thermostat to cycle.
Re-check & top off as the system settles. Monitor levels for the next couple of rides.
Special Considerations for the 2022 FE350HQ
- This model uses KTM's advanced cooling layout – both radiators should be drained to ensure a complete change.–2
- If your FE350HQ has been fitted with a coolant recovery tank mod, ensure you fill both the radiator and auxiliary reservoir for proper cycling.–3
- The FE350HQ is sensitive to trapped air – always run and bleed the system fully to prevent air pockets that can lead to localized overheating.
- Never substitute automotive coolant or hard water, as the magnesium and aluminum engine components require motorcycle-specific coolant to prevent corrosion and build-up.
When to Change the Coolant
MotoSport recommends changing your coolant at least every 12 months, more often if you ride in muddy or extreme conditions, or notice signs of overheating.
Final Checks
- Monitor coolant level after your first couple of rides.
- Inspect all hoses and clamps for leaks or aging – replace as needed using MotoSport OEM or performance parts.
- If you notice repeated overheating, persistent low coolant, or contamination, investigate for other cooling system faults or consult your manual for troubleshooting steps.
Keep your 2022 Husqvarna FE350HQ running strong — a simple coolant swap gives peace of mind and reliable power for every ride.
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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.