How to Change the Coolant in a 2020 Sherco 250SE-R
Shop parts for a 2020 Sherco 250SE-R Dirt Bike.
Maintaining the cooling system of your 2020 Sherco 250SE-R is vital for optimal engine performance and longevity. Over time, coolant degrades and loses its ability to prevent overheating, freezing, and corrosion. Follow these step-by-step instructions, created especially for MotoSport.com riders, to safely change your coolant and keep your bike running strong.
What Makes the 2020 Sherco 250SE-R Cooling System Unique?
The 250SE-R features a high-capacity radiator and precision water pump. Sherco recommends using a specific type of coolant–Minerva Perma Universal D 4 -25C, or an equivalent high-quality coolant for aluminum radiators. Always confirm the fluid level at the expansion tank–the system capacity is approximately 1.1 liters.* Maintenance is straightforward, but using recommended parts and correct torque specs is crucial for system integrity.*
Tools & Supplies Needed
- Fresh coolant (Minerva Perma Universal D 4 -25C or equivalent)
- Drain container
- Socket wrench set
- New drain plug washer (recommended)
- Torque wrench
- Protective gloves
- Shop towels
Step-by-Step Coolant Change Guide
- Prepare the Bike
- Park your Sherco 250SE-R vertically on level ground and let the engine cool completely.
- Remove the radiator cap slowly to release any pressure.
- Drain Old Coolant
- Place a catch container under the engine.
- Remove the coolant drain screw from the water pump cover (referenced as screw A), usually located on the lower left side.
- Allow coolant to fully drain into your container.
- If you suspect contamination, flush the system by briefly adding distilled water or a 50–50 mix of water and vinegar. Drain again before refilling.*
- Reinstall and Torque the Drain Screw
- Replace the drain screw washer, if available.
- Reinstall the drain screw and torque to 6Nm (use a torque wrench for accuracy).
- Refill with Fresh Coolant
- Remove the side bleed screw from the left side of the radiator (M6x8, torque 8Nm with new gasket).
- Pour coolant slowly into the radiator cap opening until fluid comes out bubble-free from the bleed screw; reinstall the screw and tighten.
- Continue adding coolant until the radiator is full and the coolant reaches the 'LEVEL' mark in the expansion container (roughly 1.1 liters total).
- Final Checks
- Replace the radiator cap securely.
- Start the engine and let it idle for several minutes. Check for leaks and watch the fluid level; top up if necessary.
- After cooling, verify fluid level again and adjust as needed.
Additional Tips for Sherco Owners
- Dispose of old coolant responsibly at an approved collection facility–coolant is toxic and hazardous to the environment.
- Check the radiator and hose connections for signs of cracks or leaks during each coolant change.
- Always use the correct torque values when reassembling system components to avoid damage.
- Using an OEM coolant recommended for aluminum radiators will prevent internal corrosion and premature failure.
Regular cooling system maintenance ensures your Sherco 250SE-R performs at its peak, even in demanding riding conditions. For parts, replacement hoses, and all your maintenance needs, MotoSport.com has you covered.
Related Shopping Categories
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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.