How to Change the Coolant in a 2019 Husqvarna FX350: Step-by-Step Guide
Regular coolant changes are a crucial part of keeping your 2019 Husqvarna FX350 running cool and reliably on the track or trail. Over time, coolant degrades, which can lead to overheating, corrosion, and poor engine performance. With this MotoSport-exclusive guide, you’ll be prepared to change your FX350’s coolant efficiently and safely, ensuring optimal performance specific to your bike.
What You Need
- Metric socket set
- Drain pan
- Coolant rated for aluminum engines (preferably blue G11 type or a high-quality modern motorcycle coolantavoid mixing coolant types)
- Distilled water (if flushing)
- Clean rags
- Protective gloves
- Torque wrench (recommended)
Preparation
- Allow the engine to fully cool before startingopening the radiator cap on a hot engine can cause burns from pressurized steam or hot coolant.
- Work in a well-ventilated area and keep environmental precautions in mind: coolant is toxic and should be disposed of responsibly.
- Elevate the bike on a stand so it remains level throughout the process.
Step-by-Step Coolant Change
-
Remove plastics for access.
Remove the seat and right side panel to access the radiator cap and drain bolt area. You may also need to remove the fuel tank for complete access, depending on your setup. -
Open the radiator cap.
Slowly loosen the radiator cap to release pressure, then remove completely. This step ensures the coolant drains more completely from the radiators. -
Locate and remove the coolant drain bolt.
On the FX350, the coolant drain bolt is typically found on the water pump cover. Place your drain pan underneath, then remove this bolt. Allow all coolant to drain from both radiators and the engine. -
Flush the system (optional but recommended for most coolant changes).
Reinstall the drain bolt finger-tight and fill the system with distilled water. Briefly start and idle the bike (outdoors, with sufficient ventilationnever run indoors without exhaust extraction due to toxic gases) for about a minute. Shut off, allow the engine to cool, then repeat the drain process to flush out old coolant and contaminants. -
Reinstall the drain bolt.
Wipe any residue, then reinstall and torque the drain bolt to manufacturer’s specification. -
Fill the radiators with fresh coolant.
Slowly pour in new coolant until it reaches just below the filler neck. Gently rock the bike side to side to help release air bubbles. -
Bleed the system.
Start the engine and let it idle with the radiator cap off until the thermostat opens (the coolant will begin to circulate, and the level may drop). Top up as needed. Once the system is filled and no more air bubbles escape, replace the radiator cap securely. -
Reinstall plastics.
Refit the fuel tank, side cover, and seat. -
Check coolant level after the first ride.
Allow the engine to cool and recheck the level in both the radiator and (if equipped) the expansion tank. Top off if necessary.
2019 Husqvarna FX350 Model Notes
- The FX350 uses a lightweight magnesium engine case and aluminum radiatorsalways select a coolant formulated for aluminum components to prevent corrosion.
- Do not mix different coolant types (such as blue G11 and orange/pink G12), as this can reduce protection and performanceflush the system if changing types.
- The FX350 does not come equipped with a radiator fan from the factory; consider monitoring temperatures closely during slow riding or install an aftermarket fan for improved cooling in tight woods conditions.
- Never run the engine at high revs when cold—allow the bike to warm up at idle speed for optimal engine life.
Disposal & Safety Tips
- Collect old coolant and flush water in a sealed container and dispose of it at your nearest hazardous waste facility.
- Keep coolant away from pets and children—it is highly toxic even in small amounts.
Keeping your 2019 Husqvarna FX350's cooling system serviced is key to a long-lasting, hard-charging machine. MotoSport stocks all the specific hoses, radiators, coolants, and protection you might ever needchoose quality parts for a hassle-free, cool-running bike.
Related Shopping Categories
Shop Radiators for a 2019 Husqvarna FX350 Dirt Bike.
Shop Coolant for a 2019 Husqvarna FX350 Dirt Bike.
Shop Temperature Sensors for a 2019 Husqvarna FX350 Dirt Bike.
Shop Tools for a 2019 Husqvarna FX350 Dirt Bike.
Shop Radiator Hoses for a 2019 Husqvarna FX350 Dirt Bike.
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.