How to Change the Oil in a 2018 Sherco 250SE-R

Shop parts for a 2018 Sherco 250SE-R Dirt Bike.

This guide, proprietary to MotoSport.com, provides step-by-step instructions for changing the oil in your 2018 Sherco 250SE-R. Proper oil maintenance keeps your engine running smoothly and extends the life of critical engine components. Below you’ll find a comprehensive list of tools, a detailed procedure, and key model-specific notes to ensure success with this maintenance task.

Tools and Supplies Needed

  • Socket set (notably 17mm and 8mm sockets)
  • 4mm Allen wrench
  • Drain pan
  • Gloves and shop towels
  • New oil filter (replace every oil change)
  • New O-ring and drain plug gasket
  • SAE 10W40 engine oil, 750ml (as specified for the 2018 250 SE-R)
  • Parts tray for plugs and filter
  • Torque wrench

Model-Specific Notes

  • The 2018 Sherco 250SE-R’s engine takes 750 ml of SAE 10W40 oil.
  • This is a 2-stroke engine and uses a wet clutch with engine oil to lubricate the gearbox and clutch components.
  • It’s critical to replace the oil filter and O-ring at every oil change to ensure proper filtration and prevent leaks.
  • There are two drain plugs (including a magnetic one) and a pre-filter that must all be serviced during each oil change. Neglecting these can lead to retained contaminants and premature engine wear.
  • Tightening torques are: Drain Plug M19–22Nm, Magnetic Drain Plug M12–15Nm, Oil Filter Cap–15Nm.

Step-by-Step Oil Change Process

  1. Warm up the engine for a few minutes to ensure the oil flows freely, then shut the engine off and place the bike on a sturdy stand.
  2. Remove the skid plate or engine guard if fitted, for access to the drain plugs.
  3. Position the drain pan under the engine.
  4. Using a 17mm socket, remove the main oil drain plug (M19) and allow oil to drain completely. Inspect and replace the crush washer if worn.
  5. Remove the magnetic drain plug (M12) with a 17mm socket. Clean off any metal debris from the magnet, as this helps catch dangerous particles circulating in the oil.
  6. Locate and remove the pre-filter (typically requires a 4mm Allen key). Remove and clean the pre-filter in fresh solvent, inspecting for any excessive debris or particles.
  7. Replace the oil filter with a new one. Lightly oil the new O-ring before installation to ensure a proper seal. Reinstall the oil filter cap and torque to 15Nm.
  8. Reinstall the cleaned pre-filter and torque the plug to specification.
  9. Reinstall and torque the main drain plug and magnetic drain plug to their specified torque values (22Nm for M19, 15Nm for M12).
  10. Through the oil filler cap, pour in 750 ml of SAE 10W40 2-stroke oil suitable for use with a wet clutch. Avoid overfilling; check the oil level via the sight gauge if equipped.
  11. Check for leaks around all plugs and the oil filter cap.
  12. Reinstall the engine guard/skid plate.
  13. Start the motorcycle, let it idle for a minute, then shut off and recheck the oil level. Top off if needed.
  14. Dispose of old oil and filter responsibly at a certified recycling facility. Never pour used oil down the drain or in the wild.

Additional Tips and Warnings

  • First oil change should be done at 5 hours from new, then regularly as per your owner’s manual schedule.
  • Always use a high-quality oil that meets or exceeds manufacturer specs.
  • Never over-tighten drain plugs or oil filter caps; always use a torque wrench to prevent case damage.
  • Always inspect drained oil for excessive metal or contamination, which could indicate internal engine issues.
  • If unsure about any steps, consult your owner’s manual or a certified Sherco technician.

Routine oil changes are one of the most important maintenance tasks for your 2018 Sherco 250SE-R. Keeping up with them assures optimal gearbox, clutch, and engine longevity and performance. For more proprietary dirt bike service guides and genuine parts, trust MotoSport.com as your maintenance partner.

Related Shopping Categories

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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.