How to Change the Oil in a 2023 Sherco 450 SEF-R

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Keeping your 2023 Sherco 450 SEF-R in peak condition starts with regular oil changes. Changing the oil is a critical maintenance task that ensures engine longevity, peak performance, and reliability — especially on high-performance enduro motorcycles like the 450 SEF-R. This MotoSport.com how-to guide provides you with step-by-step instructions, a list of necessary tools and supplies, and unique call-outs specific to this model.

Tools and Supplies Needed

  • Sae 10W60 motorcycle-specific engine oil – 0.9 liters required for a full change
  • New oil filter (replace with every oil change)
  • New filter O-ring and drain plug gaskets
  • Oil drain pan or catch container
  • Socket wrench set
  • M19 socket (for primary drain plug, 22 Nm torque)
  • M12 socket (for the magnetic drain plug, 15 Nm torque)
  • Torque wrench
  • Gloves and shop rags
  • Funnel

Important Model-Specific Notes

  • Oil Capacity: 0.9 liters
  • Oil Spec: Use SAE 10W60 fully synthetic oil
  • Filter Replacement: Always install a new oil filter during each oil change
  • Drain Plugs and Torque:
    • M19 Drain Plug: 22 Nm
    • M12 Magnetic Drain Plug: 15 Nm
  • Check the oil sight gauge after filling and run the bike briefly to accurately check the level

Step-by-Step Instructions

  1. Warm up the Engine
    • Start the motorcycle and let it idle for several minutes. This thins the oil, allowing it to drain more completely.
  2. Prepare Your Work Area
    • Place the bike on a level stand.
    • Lay out all your tools and place the oil catch pan directly under the engine.
  3. Remove Skid Plate (if equipped)
    • For easier access and a cleaner job, remove the engine guard/skid plate.
  4. Remove the Oil Filler Cap
    • Unscrew the filler cap on the right side to allow oil to drain more quickly.
  5. Drain the Oil
    • Remove the M19 drain plug and allow oil to flow into your catch pan.” Replace the drain plug gasket if necessary.
    • Remove the M12 magnetic drain plug (located near the bottom of the engine). Clean the magnetic tip and replace the gasket. Both drain plugs should be torqued to factory specifications after reinstall (22 Nm for M19, 15 Nm for M12).
  6. Remove the Pre-Filter(s)
    • Remove the oil pre-filter(s) for cleaning or replacement, following manufacturer recommendations.
  7. Replace the Oil Filter
    • Remove the oil filter cover with a socket.
    • Take out the used oil filter and rubber O-ring.
    • Install a fresh O-ring and new filter, observing the correct orientation (see manual image if unsure).
    • Reinstall the filter cover, torquing to spec (typically 15 Nm – verify in your owner’s manual).
  8. Refit Pre-Filter(s) and Drain Plugs
    • Refit and torque the pre-filter, M12, and M19 plugs to their specifications.
  9. Fill with Fresh Oil
    • Using a funnel, add 0.9 liters of SAE 10W60 oil via the oil filler neck.
    • Do not overfill; stop and check the sight gauge as you approach the correct volume.
  10. Check for Leaks
    • Look carefully around the oil filter cap, drain plugs, and pre-filter area for any leaks.
  11. Run and Final Check
    • Start the engine and let it idle for a minute. Shut it down and let the bike sit for at least one minute. Double-check the oil level in the sight gauge and top up if necessary.
  12. Dispose of Waste Responsibly
    • Bring used oil and filters to an authorized recycling center. Never dispose of oil in the trash, down drains, or in nature.
  13. Reinstall Skid Plate and Clean Up
    • Refit your engine guard/skid plate.
    • Wipe down the area and put away all tools.

Common Mistakes to Avoid

  • Forgetting to replace or properly seat the filter O-ring or drain plug gaskets
  • Over-tightening drain plugs – always use a torque wrench to avoid stripping threads
  • Not checking oil level after the engine runs and oil circulates
  • Using the wrong oil viscosity or type (always use SAE 10W60 for this engine)

2023 Sherco 450 SEF-R Owner Call-Outs

  • The oil filter orientation is critical – verify direction by referencing your manual or photos
  • Always replace the small O-rings and gaskets, as these are designed for one-time use
  • The sight glass is your best indicator for oil level; don’t trust the dipstick alone

Sticking to this robust oil change protocol keeps your 2023 Sherco 450 SEF-R running strong and ready for the trail or track.

For more model-specific service tips and genuine parts, trust MotoSport.com — your source for expert dirt bike maintenance guides.

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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.