How to Change the Oil in a 2020 Sherco 300 SEF FACTORY

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Changing the oil regularly in your 2020 Sherco 300 SEF FACTORY is essential for keeping your dirt bike running smoothly and prolonging engine life. Oil change intervals may differ based on how hard you ride, but for maximum protection, change the oil every 10–15 hours of aggressive use or as needed. The steps below guide you through the oil change process, with attention to model-specific details and expert-proven best practices.

Tools & Materials Needed

  • Socket set (for drain bolts and oil filter cap)
  • Torque wrench
  • Drain pan (sufficient volume for 0.9 liters at least)
  • Clean rags or shop towels
  • SAE 10W60 engine oil (0.9 liters)
  • New oil filter
  • New O-ring for the oil filter cap
  • New gaskets/crush washers for drain bolts (recommended)
  • Funnel
  • Nitrile gloves (optional, recommended)

Steps for Changing the Oil

  1. Warm Up the Engine
    Start the bike and let it idle for about 3–5 minutes. This allows the oil to warm up and flow more easily, helping to flush out more contaminants.
  2. Set Up Your Work Space
    Turn off the engine and secure the bike on a stand. Place the drain pan under the engine to catch used oil.
  3. Remove the Drain Plugs
    The 2020 Sherco 300 SEF FACTORY uses two drain bolts on the crankcase. Using your socket set, remove both drain plugs and the magnetic drain plug (be careful, oil may be hot). Hold onto the gaskets or crush washers—they should be replaced if worn or deformed.
    Note the proper torque when reinstalling:
    • Drain plug 1 (M19): 22 Nm
    • Magnetic drain plug (M12): 15 Nm
  4. Remove the Oil Filter and Pre-Filter
    Unscrew the oil filter cap and take out the old oil filter. Pay attention to the orientation for correct reinstallation. Remove the pre-filter as well.
  5. Allow Oil to Fully Drain
    Let the oil drain completely. Gently tilt the bike back and forth to help any residual oil escape.
  6. Inspect, Clean, and Replace Parts
    Clean the drain plugs, magnetic plug, and pre-filter thoroughly. Replace the O-ring on the oil filter cap and install a new oil filter. Inspect the removed oil for metal shavings—excessive debris may indicate internal wear, and further investigation could be required.
    Always use a new gasket on the drain plug and O-ring on the oil filter cap to ensure a tight seal and prevent leaks.
  7. Reinstall Oil Filter, Pre-Filter, Cap, and Drain Plugs
    Insert the new oil filter (make sure it's in the correct direction), replace the pre-filter, and reinstall the filter cap with the new O-ring. Tighten the cap to 15 Nm. Install and tighten both drain plugs to their specified torques.
  8. Refill with Engine Oil
    Remove the engine oil filler cap. Place a funnel into the filler and pour in 0.9 liters of SAE 10W60 engine oil. If you ride in severe conditions, you may benefit from high-quality synthetic oil.
  9. Check the Oil Level
    With the bike upright (not on the side stand), check the oil level in the sight glass. If the level is low, add oil little by little until it sits near the top of the glass.
    Do not overfill—the level should stay just below the top mark when the bike is vertical.
  10. Run and Inspect the Engine
    Start the bike and let it idle for a minute, then shut it off. Check the area around the oil filter cap and drain plugs for leaks. Let the bike sit for a few minutes, then re-check the oil level.
  11. Dispose of Used Oil Responsibly
    Take the used oil, oil filter, and rags to a local recycling or hazardous waste facility. Never dump oil in regular trash or down the drain—it's illegal and harmful to the environment.

Model-Specific Owner Call-Outs

  • Duel Drain Bolts: The 2020 300 SEF FACTORY uses two drain bolts. Both must be removed and properly torqued to ensure full drainage and avoid leaks .
  • Magnetic Plug: Clean all collected metal shavings from the magnetic plug at each oil change .
  • SAE 10W60 Oil Only: The manufacturer's specification is for SAE 10W60—use only this grade for proper engine performance and longevity .
  • Filter Replacement: Replace the oil filter at every oil change. Skipping this can shorten engine life .
  • Proper Torque: Follow specified torque values carefully to prevent thread damage, especially in the alloy case .
  • Crush Washer Replacement: Drain plug washers (gaskets) should be replaced every time to ensure a leak-free seal .

Final Tips

  • Never use impact tools on drain plugs or filter caps—hand-tighten with torque wrench only.
  • If you notice the oil turning black very quickly after changes, review your riding style or consider more frequent oil changes.
  • Document the date and hours at every oil change for long-term maintenance records.

For any additional questions or to source genuine Sherco parts and MotoSport.com exclusive expertise, visit MotoSport.com—the ultimate destination for dirt bike maintenance and technical support.

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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.