How to Change the Coolant in a 2017 Husqvarna FX350
Shop parts for a 2017 Husqvarna FX350 Dirt Bike.
Maintaining optimal engine temperature is essential for peak performance and longevity, especially on high-performance dirt bikes like the 2017 Husqvarna FX350. Regularly changing your coolant not only helps prevent overheating but also protects critical engine components from corrosion and mineral build-up. This guide provides a detailed, proprietary MotoSport walkthrough on properly changing the coolant in your FX350—including tips specific to this model.
What You Need
- High-quality pre-mixed coolant approved for aluminum engines (avoid mixing coolant types)
- 10mm socket or wrench
- Drain pan
- Funnel
- Clean rags
- Optional: new seal ring for the drain bolt
Step-by-Step Guide to Coolant Change
- Preparation
Place the bike upright on a flat, level surface with the engine completely cool. Remove the skid plate (if equipped) for easier access to the water pump cover. - Access the System
Remove the radiator cap by pressing down and turning counterclockwise. This will release any pressure and allow coolant to flow freely during draining. - Drain the Old Coolant
Locate the coolant drain bolt on the water pump cover (right side of the engine; use the 10mm socket). Position the drain pan beneath it. Remove the bolt and allow all coolant to drain out. To help the process, slightly rock the bike side-to-side. Inspect the drained coolant for any debris or discoloration–anything unusual may indicate a system flush is needed or other issues. - Inspect & Button Up
Check the drain bolt and replace the seal ring if worn. Reinstall the drain bolt securely (do not overtighten; torque to manufacturer specification if possible). - Refill with Fresh Coolant
Insert the funnel into the radiator opening. Pour in your pre-mixed coolant slowly, pausing occasionally to allow air pockets to escape. The 2017 FX350 radiator capacity is approximately 1.2L, but fill just below the base of the radiator neck. - Bleed the System
To avert airlocks, gently rock the bike and briefly squeeze the large radiator hoses to help burp out trapped air. Top off coolant as needed. - Close Up
Reinstall the radiator cap. Wipe down any excess fluid. Reattach the skid plate if needed. - Final Checks
Start the engine and let it idle for several minutes. Monitor the temperature and check for leaks at the drain bolt and hoses. After the engine cools, re-check coolant level—top off if necessary.
Model-Specific Notes for the 2017 FX350
- Cooling System Design: The FX350 uses lightweight radiators and minimal shrouds for cross-country efficiency. Overfilling the radiator can force excess coolant out the overflow; keep the level just below the radiator neck.
- Protection Against Overheating: Riders pushing the limits in technical terrain or hot climates should consider a coolant catch tank for overflow management and a high-quality coolant with extra heat-dissipation properties, as the compact radiators have less reserve capacity than enduro models.
- Seal Ring for the Drain Bolt: Always inspect the copper or aluminum crush washer/seal ring when draining. A new one is recommended at every service for the best leak prevention.
When to Change Coolant
For the FX350, coolant should be changed at least once per year or after any major engine work. More frequent changes may be necessary if racing in harsh conditions or if discolored coolant is observed.
Keep Your FX350 Running Cool
Routine coolant replacement takes little time but delivers peace of mind and consistent performance. For everything you need—including coolant, tools, and maintenance parts—MotoSport has you covered.
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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.