How to Change the Oil in a 2023 Sherco 250SEF-R

Shop parts for a 2023 Sherco 250SEF-R Dirt Bike.

Routine oil changes are critical to keeping your 2023 Sherco 250SEF-R running great and extending the life of its high-performance engine. This comprehensive guide from MotoSport.com gives you everything you need to know for a successful oil change, including required tools, detailed steps, and model-specific tips.

Tools and Materials Needed

  • 8mm socket or Allen wrench
  • 17mm socket
  • 4mm Allen wrench
  • Torque wrench
  • Drain pan (for used oil)
  • Replacement oil filter (replace with every oil change)
  • Replacement O-ring and gaskets (for oil filter cover and drain plug)
  • Clean rags or towels
  • Funnel
  • 0.9L of SAE 10W60 full-synthetic motorcycle oil (meeting manufacturer specifications)
  • Protective gloves (recommended)

Step-by-Step Instructions

  1. Prepare the Bike
    • Ensure the engine is warm to help the oil drain more thoroughly, but not hot for safety.
    • Place the Sherco 250SEF-R on a stand or make sure it’s upright on a level surface.
    • Remove the engine guard or skid plate if installed and necessary for access.
  2. Drain Old Oil
    • Put your drain pan under the engine sump.
    • Remove the engine oil filler cap (on top of the right engine cover) to vent the crankcase.
    • Use the 17mm socket to remove Drain Plug 1 (M19, 22Nm) found at the base of the engine. Let old oil drain completely.
    • Remove the magnetic drain plug (M12, 15Nm) using your wrench. Inspect for metal debris and wipe clean.
    • Inspect and clean the pre-filter (a mesh screen near the drain plugs). Remove and rinse with clean solvent if needed before reinstalling.
  3. Remove and Replace Oil Filter
    • Use a 4mm Allen wrench to remove the oil filter cover. Carefully note the direction of the old oil filter as you take it out.
    • Install the new oil filter in the correct direction as shown in the service manual.
    • Replace the O-ring on the filter cover as needed.
    • Reinstall the oil filter cover and tighten to 15Nm.
  4. Reinstall Drain Plugs – Pre-Filters
    • Install cleaned pre-filters as shown in your manual.
    • Install the magnetic drain plug with a new gasket (torque to 15Nm), followed by Drain Plug 1 (torque to 22Nm).
  5. Refill With New Oil
    • Double-check all plugs are tight.
    • Place a funnel in the filler hole and pour in 0.9L of SAE 10W60 motorcycle oil.
    • Reinstall the filler cap with a new O-ring if necessary.
  6. Check Oil Level
    • Start the engine and let it idle for 30–60 seconds.
    • Shut the engine off and wait a minute for oil to settle.
    • Check the sight glass or dipstick (if equipped) to ensure oil level is at the correct mark. Add oil carefully in small amounts if necessary.
  7. Clean Up and Inspect
    • Wipe up any oil drips, reinstall the engine guard/skid plate, and check for any leaks around the plugs and filter.
    • Dispose of the used oil, filter, and any oily rags in accordance with local environmental regulations. Never pour oil down a drain or onto the ground.

Model-Specific Callouts for the 2023 Sherco 250SEF-R

  • This model requires 0.9L of SAE 10W60 oil per change. Do not overfill.
  • Both the magnetic drain plug and standard drain plug use specific torque values (15Nm and 22Nm). Overtightening can cause case damage or leaks.
  • The oil filter direction matters; reference placement photos in the service manual for correct installation.
  • Always use fresh gaskets/O-rings to avoid leaks, especially on the drain plugs and oil filter cap.
  • If you ride aggressively or in harsh conditions (mud, sand), consider changing the oil more frequently than the manual’s maximum recommended interval.
  • Monitor for any signs of metallic debris on the magnetic plug, as this can indicate potential internal wear.

Pro Tips

  • Warming the engine just before draining helps old oil and contaminants flow out more completely.
  • Have all parts and tools ready before starting.
  • Wipe down engine surfaces to avoid trapping dirt or old oil during reassembly.
  • Zero leaks isn’t optional—double-check every bolt and replace every gasket.

With this guide and the right tools, changing the oil on your 2023 Sherco 250SEF-R can be accomplished efficiently and cleanly, ensuring your bike is always ready for the next ride.

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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.