How to Change the Coolant on a 2019 Sherco 450 SEF FACTORY
To keep your 2019 Sherco 450 SEF FACTORY running cool and reliable, regular coolant changes are essential. Below is a complete proprietary MotoSport guide tailored specifically for this high-performance French enduro machine.
Before You Begin: What to Know About the 450 SEF FACTORY
- Coolant Type: Use only a high-quality motorcycle coolant such as Motul Motocool Factory Line -35°C for optimal protection and corrosion resistance specific to your model’s alloy construction.
- Check Position: Always ensure your bike is upright and sitting on a level surface for any maintenance or fluid check.
- Expansion Tank: This model uses an overflow (expansion) tank system– always top up to the “LEVEL” marking, never overfill.
Tools & Supplies Needed
- Socket set (6mm and 8mm common)
- Philips screwdriver
- Drain pan
- Funnel
- New coolant (Motul Motocool Factory Line recommended)
- Clean rags
- Optional: torque wrench for drain bolt (6 Nm spec)
- Protective gloves & eyewear
Step-by-Step Coolant Change Procedure
- Let the Engine Cool
Only change coolant when the engine is completely cold to prevent burns and ensure even draining. - Remove Necessary Shrouds
If needed, remove radiator shrouds or plastics to access the radiator cap and expansion tank. - Open the Radiator Cap and Expansion Tank
Unscrew the radiator cap and expansion reservoir cap to allow air in and promote full draining. - Position the Drain Pan
Place a catch pan directly under the water pump area on the right side of the engine. - Locate and Remove the Coolant Drain Bolt
On the 2019 Sherco 450 SEF FACTORY, the typical drain bolt is located on the lower right side of the water pump or crankcase.
Remove the bolt carefully. Expect coolant to flow rapidly; keep the drain pan aligned. - Remove the Bleed Screw (If Equipped)
Some models have a small bleed screw on the cylinder head or upper radiator hose. Remove this to help air escape and complete drainage. - Flush (Optional but Recommended)
Pour a small amount of distilled water through the radiator and allow it to flush out any residual old coolant. Repeat until the draining liquid is clear. - Refit the Drain Bolt
Inspect and clean the drain bolt and washer.
Reinstall and tighten to 6 Nm (be precise– overtightening can crack the case). - Fill with Fresh Coolant
Slowly pour new coolant into the radiator neck until full.
Fill the expansion tank to the “LEVEL” indicator. - Bleed the Cooling System
If there is a bleed screw, temporarily reinstall it once coolant starts to exit the port and no air bubbles are seen.
Gently rock the bike side-to-side to release trapped air. - Run the Engine
With the radiator cap off, start the bike and let it idle for 3–5 minutes.
Top off the radiator as the level drops. Watch for escaping bubbles.
Shut off the engine, reinstall the radiator cap, and wipe up any spills. - Final Checks
Let the bike cool, re-check coolant levels, and inspect for any leaks. Top off the expansion tank if needed.
Important Notes for Your 450 SEF FACTORY
- Torque Specs: Tighten the drain bolt to 6 Nm, and water pump cover bolts (if removed) to 10 Nm.
- Seal Condition: Always check the radiator cap seal and O-rings for wear and replace if necessary to prevent pressure loss and overheating.
- Disposal: Take used coolant to an approved facility– improper dumping harms the environment and is often illegal.
When to Change Coolant
- Replace the coolant every 12 months or 20 hours of hard riding– whichever comes first, due to the high-output engine and extreme heat cycles of competition enduros.
Model-Specific Insights
- The 2019 Sherco 450 SEF FACTORY is known for its robust four-stroke power and agile frame, but like many high-performance European bikes, its compact cooling system requires strict attention to level and quality.
- Keep an eye on the water pump weep hole (under the right engine cover)– any coolant leaking from here signals it’s time for a new seal or bearing.
Related Shopping Categories
Shop Radiators for a 2019 Sherco 450 SEF FACTORY Dirt Bike.
Shop Coolant for a 2019 Sherco 450 SEF FACTORY Dirt Bike.
Shop Temperature Sensors for a 2019 Sherco 450 SEF FACTORY Dirt Bike.
Shop Tools for a 2019 Sherco 450 SEF FACTORY Dirt Bike.
Shop Radiator Hoses for a 2019 Sherco 450 SEF FACTORY 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.