How to Change the Coolant in a 2022 Husqvarna FX350: MotoSport Guide
Shop parts for a 2022 Husqvarna FX350 Dirt Bike.
The 2022 Husqvarna FX350 is a high-performance off-road machine, sharing much of its engineering with KTM's 350 lineup. Regular coolant changes are vital for consistent power delivery and engine longevity, particularly if you ride hard or in extreme conditions. The following step-by-step guide is tailored for FX350 owners and includes important details specific to this model.
What You'll Need
- Pre-diluted ethylene glycol-based motorcycle coolant (choose a premium brand compatible with aluminum radiators)
- Metric sockets or a T-handle (to remove water pump drain bolt and radiator cap)
- Catch pan or container
- Torque wrench
- Clean rags
- Optional: funnel
- Replacement seal ring for drain bolt (recommended)
Preparation
- With the engine completely cool, position the motorcycle upright on a level surface.
- Place a catch pan under the right side of the engine, directly beneath the water pump cover.
Step-by-Step Instructions
-
Remove the Radiator Cap
Slowly unscrew the radiator cap to release pressure from the system. This cap is located on top of the right radiator. Always perform this with a cold engine to avoid scalding. -
Drain the Old Coolant
Locate the coolant drain bolt on the water pump cover (typically the lowest bolt on the right engine cover). Using the correct socket, remove this bolt along with its seal ring.
Allow the coolant to drain completely into your catch pan. To help empty the system, gently tilt the bike side-to-side. -
Flush the System (Optional but Recommended)
For best results, you can pour distilled water into the radiator, reinstall the drain bolt, run the engine briefly, then drain again. This step helps remove residual old coolant or contaminants.
If flushing, repeat the process until the drained water runs clear. -
Inspect and Replace the Drain Bolt Seal Ring
A fresh seal ring ensures a secure and leak-free seal. Reinstall the drain bolt with a new seal ring and torque to 10 Nm (7.4 lbf–ft). -
Add New Coolant
Using a funnel, fill the radiator with new coolant up to the very top. Squeeze the radiator hoses to help any trapped air escape.
If possible, gently rock the bike to further purge air pockets. -
Bleed the System and Check for Leaks
Reinstall the radiator cap securely. Start the engine and let it idle for a couple of minutes, then shut it off and let it cool. Check coolant level at the radiator and top off if needed.
Look for leaks around the drain bolt and at hose connections. -
Final Inspection
Double-check all fasteners, ensure coolant is at the correct level, and thoroughly clean any spilled fluids.
FX350 Owner Tips & Model-Specific Notes
- Coolant recovery reservoir: Some riders add a reservoir kit to help manage coolant overflow and reduce the risk of overheating in aggressive or slow technical riding. This can be a valuable mod on the FX350 if you tend to push the bike hard in tight singletrack.
- Coolant choice: Always use a coolant that is safe for magnesium and aluminum engine materials, required by high-performance Husqvarna engines.
- Maintenance intervals: Husqvarna recommends replacing coolant at least once every two years, or sooner if you race or frequently ride in extreme conditions.
- Inspect for leaks: The FX350's high-flow cooling system works best when free of trapped air and leaksalways check hoses, clamps, and the radiator cap for integrity after service.
When to Change Your Coolant
- If the color appears rusty, brown, or murky
- If the engine overheats more frequently
- After riding in muddy, wet, or very dusty conditions (to prevent contaminants from impacting the system)
Maintaining your 2022 Husqvarna FX350's cooling system is an easy yet critical job that ensures your high-revving four-stroke runs strong and reliably on every ride. Reference your owner's manual for any detailed specifications unique to your exact trim or racing setup.
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.