How to Change the Coolant on a 2018 Husqvarna FC250 Rockstar Edition: MotoSport Guide
Shop parts for a 2018 Husqvarna FC250 Rockstar Edition Dirt Bike.
Changing the coolant on your 2018 Husqvarna FC250 Rockstar Edition is critical for optimal engine performance and long-term reliability. This guide covers all essential steps – tailored for FC250 Rockstar Edition owners – along with model-specific considerations to keep your powerhouse motocross bike at its best.
What Owners Need to Know About the FC250 Rockstar Edition
- High-Performance 4-Stroke Engine: The FC250 Rockstar Edition uses a 249.9cc, DOHC, single-cylinder, liquid-cooled engine. Proper cooling is especially important for race-tuned powerplants like this to prevent overheating and maintain consistent output.
- Factory Upgrades: As a factory-edition motorcycle, your FC250 comes with premium components developed from race-proven parts. Keeping your engine coolant fresh helps protect these upgrades and ensures the FC250's lightweight chassis and high-revving engine operate efficiently.
Tools & Supplies Needed
- OEM-quality engine coolant (silicate-free, pre-mixed is recommended)
- Basin or drain pan
- 8mm or 10mm wrench (check drain bolt size)
- Phillips screwdriver
- Clean rags
- Protective gloves & eye protection
Step-by-Step Coolant Change Instructions
-
Preparation
Ensure the motorcycle is cold and placed securely on a stand. Plush suspension on the FC250 Rockstar Edition means the bike will sit more upright and stable when on a center stand or lift stand. -
Remove the Radiator Shrouds (Optional)
For easier access, use a Phillips screwdriver to remove the radiator shroud bolts. -
Locate and Remove the Radiator Cap
Find the radiator cap on the left side of the bike, just above the cylinder head. Remove it after ensuring the system is cool to safely relieve any pressure. -
Drain the Old Coolant
Locate the coolant drain bolt at the bottom of the water pump cover on the right side of the engine case. Place a container beneath the area, loosen the bolt, and allow coolant to fully drain. -
Inspect and Clean
Inspect the drain bolt and its copper washer for wear—replace if damaged. Clean any residue around the radiator neck and fill port. -
Refit the Drain Bolt
Reinstall the bolt and torque to specification (typically 7-10 Nm, but check your owner’s manual for the factory rating). -
Add New Coolant
Slowly fill with silicate-free coolant until just below the bottom of the radiator neck. Bleed the system by gently rocking the bike or squeezing the radiator hoses to release air bubbles. -
Reinstall Radiator Cap & Shrouds
Secure the radiator cap and, if removed, reinstall the shrouds. -
Warm Up the Engine & Check Levels
Start the bike and let it idle for 2-3 minutes. Shut off and recheck coolant levels, topping off if needed. -
Clean Up & Dispose
Wipe any spilled coolant and responsibly dispose of the old coolant according to local regulations.
Extra Tips Specific to the FC250 Rockstar Edition
- Keep radiator fins clear of mud/debris for best cooling, as the tightly packed race radiators on this model can clog easily in soft conditions.
- Inspect for leaks around the water pump cover and radiator hoses—these are common spots for seepage if the system was ever run low on coolant or overheated.
- Use only high-quality, manufacturer-approved coolant to protect your advanced cooling circuits and magnesium engine parts.
A regular coolant change, about every 20 engine hours or at least annually, will keep your 2018 FC250 Rockstar Edition running strong on and off the track.
Related Shopping Categories
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Shop Tools for a 2018 Husqvarna FC250 Rockstar Edition Dirt Bike.
Shop Radiator Hoses for a 2018 Husqvarna FC250 Rockstar Edition 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.