How to Change the Oil in a 2020 Sherco 250SEF-R

Shop parts for a 2020 Sherco 250SEF-R Dirt Bike.

Properly changing the oil in your 2020 Sherco 250SEF-R is critical to maintaining smooth engine operation and longevity. This step-by-step guide covers the process in detail and highlights important notes specific to this model.

Tools and Materials Needed

  • Socket set:– 8mm, 17mm sockets, and a 4mm Allen head
  • Oil drain pan
  • New oil filter
  • Replacement O-ring for oil filter cap
  • Replacement gaskets (new crush washers for drain and magnetic plugs)
  • SAE 10W60 oil (0.9 liters)
  • Cleaning rags
  • Torque wrench
  • Funnel

Step-by-Step Oil Change Procedure

  1. Warm Up the Engine
    • Start the bike and let it idle for about 2 minutes. This helps the oil to warm up and flow out more easily.
  2. Place the Bike Securely
    • Ensure the bike is on a level surface, using a stand if possible.
  3. Prepare Your Workspace
    • Lay out your tools and position the oil drain pan directly under the engine.
  4. Remove Oil Drain Plugs
    • There are two drain plugs on the bottom of the engine: the main drain plug (M19, torque 22Nm) and the magnetic drain plug (M12, torque 15Nm).
    • Remove both using the appropriate sockets. Be careful as the oil will be hot.
    • Allow all oil to drain completely into the pan.
    • Remove and clean the magnetic drain plug of any metal particles.
  5. Remove and Clean the Pre-Filter
    • Unscrew and remove the pre-filter (item 3 in the manual). Inspect, clean, or replace if necessary.
  6. Replace the Oil Filter
    • Remove the oil filter cap using the 4mm Allen head.
    • Take out the old filter and O-ring.
    • Insert the new oil filter in the correct orientation, as shown in the manual (item w) .
    • Install a new O-ring, then reinstall and torque the filter cap (M45, 15Nm).
  7. Reinstall Drain Plugs and Pre-Filter
    • Install new crush washers on the drain plugs.
    • Reinstall the pre-filter, main drain plug (M19, torque 22Nm), and magnetic drain plug (M12, torque 15Nm).
  8. Refill with Fresh Oil
    • Remove the engine oil filler cap.
    • Using a funnel, add 0.9 liters of SAE 10W60 oil .
    • Replace the filler cap.
  9. Check Oil Level
    • Start the engine and let it idle for a few seconds, then turn it off and wait a minute.
    • Check the oil level using the sight gauge. Add oil if necessary to reach the proper level.
  10. Reinstall Engine Guard (if equipped)
    • Reattach the engine guard as per the manual instructions.
  11. Properly Dispose of Oil and Filter
    • Collect used oil, filter, and other waste for proper recycling. Never pour used oil down the drain or onto the ground .

Model-Specific Notes for the 2020 Sherco 250SEF-R

  • The oil system has both a main drain plug and a magnetic drain plug; always remove both for a thorough oil change .
  • Always use new crush washers and O-rings—these are critical for proper sealing and preventing leaks .
  • Oil capacity is 0.9 liters; do not overfill. Use only recommended SAE 10W60 engine oil for optimal performance .
  • Replace the oil filter at every oil change—this is a manufacturer requirement, not optional .
  • Torque all fasteners to manufacturer specifications to avoid stripping or under-tightening .

Common Mistakes to Avoid

  • Reusing old gaskets, O-rings, or crush washers (always replace with new ones).
  • Over-tightening drain plugs or oil filter cap, leading to stripped threads.
  • Filling with the incorrect type or amount of oil.
  • Forgetting to clean or replace the magnetic drain plug and pre-filter.

Conclusion

Following these steps ensures a proper oil change for the 2020 Sherco 250SEF-R, keeping your engine running reliably. Always refer to your official Sherco manual for the most up-to-date information and torque specifications. For full kits and recommended oils, visit MotoSport.com.

Related Shopping Categories

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Shop Tools for a 2020 Sherco 250SEF-R Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2020 Sherco 250SEF-R 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.