How to Change the Oil in a 2020 Sherco 500 SEF-R

Shop parts for a 2020 Sherco 500 SEF-R Dirt Bike.

Regular oil changes are critical for maintaining the performance and longevity of your 2020 Sherco 500 SEF-R. This guide, proprietary to MotoSport.com, will walk you through each step, provide specific call-outs for this make and model, and recommend the best tools and oil for the job.

Tools and Supplies Needed

  • 17mm socket and ratchet (for oil drain plug)
  • 8mm socket (useful if removing certain covers or bolts)
  • 4mm Allen wrench (for oil filler and filter cover bolts)
  • Drain pan (to collect old oil)
  • Oil filter (OEM or quality replacement)
  • New crush washer (recommended for drain bolt)
  • Funnel
  • Clean rags or paper towels
  • Fully synthetic 4-stroke engine oil 10W-50 or 10W-60 (approximately 1.2 liters required)
  • Torque wrench (for correct tightening torque)
  • Gloves (optional, for cleanliness)

Model-Specific Callouts

  • This model requires fully synthetic 4-stroke oil—use 10W-50 or 10W-60 viscosity per Sherco's factory recommendation for optimal engine protection and performance.
  • Oil capacity is approximately 1.2 liters. Overfilling may cause damage, so measure carefully.
  • Two drain plugs: Many Sherco 4T models, including the 500 SEF-R, have two drain plugs on the bottom–make sure to remove both to fully drain old oil.
  • The oil change interval is manufacturer-suggested at up to 100 engine hours, but more frequent changes are recommended for hard riding.

Step-by-Step Oil Change Instructions

  1. Warm Up the Engine
    Start the bike and let it idle for about 3–5 minutes. This warms the oil, helping it to drain quickly and completely. Do not let the engine get hot to the touch.
  2. Prepare the Bike
    Place the bike upright on a stand, ensuring it's level and stable. Remove the skid plate if equipped, to access the drain plugs. Place your drain pan under the engine.
  3. Locate and Remove Drain Plugs
    Using the 17mm socket, carefully remove both drain bolts from the underside of the engine–there are two on this model for complete oil evacuation.
    • Tip: Each drain plug will have a crush washer; replace with new if possible, or carefully inspect for wear.
  4. Drain Old Oil
    Allow the oil to drain thoroughly into the pan. Slightly tipping the bike side to side can help remove all old oil.
  5. Remove and Replace Oil Filter
    Use the 4mm Allen wrench to remove the oil filter cover. Take out the old filter and inspect it for debris or metal shavings, which could indicate engine issues.
    • Install a new filter (make sure it is oriented correctly). Clean the cover and rubber seal before reinstalling.
    • Tighten the filter cover bolts snugly but do not overtighten.
  6. Reinstall Drain Plugs
    Ensure the drain plugs and their crush washers are clean and free from debris. Hand-tighten, then torque to manufacturer spec (approx. 10–15 Nm; refer to your owner's manual for precise torque).
  7. Add New Oil
    Remove the oil fill cap on the right side of the engine. Using a funnel, add fully synthetic 10W-50 or 10W-60 4-stroke oil slowly–pour in around 1.1 liters at first.
    • Wait a minute, then check the sight glass or dipstick.
    • Gradually add oil until the correct level is reached–do not overfill.
  8. Finalize and Check for Leaks
    Replace and tighten the fill cap. Start the engine and let it idle for a minute. Shut off, wait 2 minutes, then recheck the oil level and add more if needed. Inspect all plugs and the oil filter area for leaks. Top off oil as needed to achieve the proper level.

Tips for the 2020 Sherco 500 SEF-R

  • Only use recommended viscosity (10W-50 or 10W-60) fully synthetic oil for best results and to maintain engine warranty.
  • Crush washers should generally be replaced at every oil change to prevent leaks.
  • Keep track of engine hours and ride conditions–change your oil sooner if you ride hard, in dusty terrain, or in racing conditions.
  • If you see significant metal flecks in the old oil or on the filter, consult your dealer immediately.

Dispose of Used Oil Properly

  • Take used oil and the old filter to an approved recycling center or auto parts store that accepts used oil.

Conclusion

  • Regular oil changes are one of the most important maintenance tasks you can perform on your 2020 Sherco 500 SEF-R. Using the right tools, premium synthetic oil, and attention to details specific to your bike ensures years of reliable and peak-performing rides. When in doubt, consult your owner's manual or a MotoSport.com dirt bike expert.

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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.