How to Change the Coolant in a 2024 Husqvarna FE501S: A MotoSport Guide
Shop parts for a 2024 Husqvarna FE501S Dirt Bike.
The 2024 Husqvarna FE501S brings fresh engineering to the world of street-legal enduro bikes—a new chassis, revised WP XACT suspension, advanced Offroad Control Unit, and refined ergonomics set it apart in performance and serviceability. As a liquid-cooled four-stroke, regular coolant maintenance is crucial for both engine longevity and top performance. This proprietary MotoSport step-by-step guide walks you through changing the coolant on your FE501S, exclusively tailored for owners of the 2024 model.
Why Coolant Maintenance Matters on Your FE501S
The 2024 model features a high-compression 511cc single-cylinder engine (with a compression ratio of 12.75:1), demanding excellent cooling to maintain optimal performance and avoid damage during intense rides. Thanks to Husqvarna's refined frame, subframe, and cooling layout, changing the coolant is quick if you use the proper method.
Tools & Supplies You Will Need
- Fresh, recommended coolant for aluminum engine components (never mix types unless compatibility is specified by the manufacturer)
- 3, 4, and 6 mm Allen wrenches
- Socket wrench set
- Flathead screwdriver
- Catching pan
- Clean rags
- Funnel
- Gloves & safety glasses
Step-by-Step: Changing the Coolant
- Park and Cool Off
Place your FE501S on a firm surface with the engine off and completely cooled down. This is vital due to the engine's high operating temperatures and system pressure. - Remove the Skid Plate and Bodywork
Use your Allen wrenches to remove the lower skid plate (new for 2024 and redesigned for rapid service access), and, if needed, the lower shrouds for easier radiator access. - Drain the Old Coolant
Locate the coolant drain bolt on the lower water pump cover (right side engine case). Place the pan beneath and carefully loosen the bolt. Open the radiator cap (left side, top of the shroud) to promote faster drainage.
Tip: The FE501S cooling system holds approximately 1 quart (approx. 0.95 liters). Dispose of old coolant properly to protect the environment. - Flush (Optional but Recommended)
For best results, flush the system with distilled water. Replace the drain bolt, fill the system with distilled water, run the engine until it cycles, then repeat steps 3 and 4 to drain again. - Inspect the System
Check hoses, clamps, and the radiator cap for wear or leaks—the 2024 model's hybrid subframe offers more room to inspect connections without fully disassembling the bodywork. - Refill with New Coolant
With the drain bolt secured (use a new washer if provided), slowly fill the radiator with the proper premixed coolant. Do not overfill. Fill until the coolant sits just below the fill neck. - Bleed Air from the Cooling System
Lean the bike side-to-side gently and squeeze the radiator hose to release trapped air. Start the bike and let it idle with the cap off until the thermostat opens and coolant circulates. Top off as needed and replace the cap. - Reassemble & Inspect
Reinstall the skid plate and bodywork. Clean up spills. Ride the bike for a few minutes, let it cool, and recheck fluid level and leak points.
FE501S-Specific Notes
- Advanced Electronics: The 2024 FE501S uses an Offroad Control Unit for electrical protections—quick diagnostics if any warning lights appear following service.
- WP Suspension Tips: When removing bodywork near fork tubes or shock, avoid bumping or contaminating the WP XACT closed-cartridge spring forks (exclusive for this year) as they are sensitive to debris or liquids.
- High-Performance Engine: Always use coolant rated for high-compression, high-temperature racing engines with anti-cavitation additives to extend the life of the single-cylinder powerplant.
- Skid Plate Differences: The redesigned skid plate can be removed without dropping the exhaust header, simplifying fluid changes compared to prior models.
Stay Ready for the Next Ride
Routine maintenance like coolant changes are essential for the longevity and performance of your FE501S—whether you are conquering technical enduro trails or hitting backroads. MotoSport stocks all the OEM and aftermarket parts, tools, and protective gear tailored to the 2024 Husqvarna FE501S, so you can maintain your bike with confidence and precision. If you're in need of any replacement supplies, upgrades, or want to personalize your machine, visit our dedicated FE501S parts page above and keep your ride running strong all season long.
Related Shopping Categories
Shop Radiators for a 2024 Husqvarna FE501S Dirt Bike.
Shop Coolant for a 2024 Husqvarna FE501S Dirt Bike.
Shop Temperature Sensors for a 2024 Husqvarna FE501S Dirt Bike.
Shop Tools for a 2024 Husqvarna FE501S Dirt Bike.
Shop Radiator Hoses for a 2024 Husqvarna FE501S 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.