How to Change the Oil in a 2021 Sherco 250 SEF FACTORY

Shop parts for a 2021 Sherco 250 SEF FACTORY Dirt Bike.

Performing regular oil changes on your 2021 Sherco 250 SEF FACTORY is essential for maintaining peak engine performance and extending the life of your dirt bike. Follow this proprietary MotoSport.com guide for a precise, step-by-step process.

Tools and Supplies Needed

  • 8mm socket
  • 17mm socket
  • 4mm Allen key
  • Drain pan/container
  • New engine oil (SAE 10W60, 1.0 liter)
  • New oil filter
  • New drain plug washers/gaskets (as required)
  • Gloves and shop towels
  • Torque wrench

Preparation

  • Ensure the engine is warmed up before draining the oil. Warm oil flows more freely, removing more contaminants.
  • Put your bike on a stable stand and ensure it is upright and secure.

Step-by-Step Oil Change Instructions

  • Remove the Engine Guard:–
    If your bike has an engine guard installed, remove it for clear access to drain bolts and filter components.
  • Drain the Oil:–
    • Place a drain pan beneath the crankcase.
    • With a 17mm socket, loosen and remove the main drain plug (typically labeled as "drain plug 1" in the manual).
    • Remove the magnetic drain plug (requires an 8mm socket) as well. This plug can have metallic debris; inspect and clean it.
    • Remove the pre-filter screen if equipped (usually with a suitable socket or Allen key). Clean or replace if necessary.
    • Allow all oil to drain completely from the engine.
  • Remove and Replace the Oil Filter:–
    • Locate and remove the oil filter cap (typically requires a 4mm Allen key or 8mm socket, depending on model year production).
    • Take out the old oil filter; make note of its installation direction for correct replacement.
    • Install the new oil filter in the same orientation as the old one.
    • Replace the filter cap with a new O-ring if supplied, and torque to the specified value (15 Nm for cap bolts as per the manual) .
  • Reinstall Plugs and Pre-Filter:–
    • Reinstall the cleaned pre-filter.
    • Install new washers or gaskets on both drain plugs.
    • Reinstall both drain plugs and tighten to factory torque specs:
      • Main drain plug: 22 Nm
      • Magnetic drain plug: 15 Nm
  • Pour in New Oil:–
    • Remove the engine oil filler cap.
    • Pour in 1.0 liter of SAE 10W60 four-stroke engine oil (the 2021 Factory model may note between 0.9–1.0 liter depending on complete drain including oil filter). Double-check your level after filling.
    • Replace the filler cap.
  • Check Oil Level and Finalize:–
    • Start the engine for 1-2 minutes, then turn it off and allow the oil to settle.
    • Check the oil level in the sight window while the bike is upright. Add oil as needed.
    • Inspect for leaks around both drain plugs and oil filter area.
    • Reinstall the engine guard if removed.
  • Dispose of Used Oil Properly:–
    Take all used oil, filters, and shop towels to a certified recycling center.

Important Call-Outs for the 2021 Sherco 250 SEF FACTORY

  • Oil Capacity:– The engine oil capacity for the 2021 model is listed at 1.0 liter, but after replacing the oil filter, start with 0.9 liter, check, then top up as needed.
  • Tightening Torques:– Adhere to specific tightening torques for all plugs and the oil filter cap (Main drain plug: 22 Nm; Magnetic plug: 15 Nm; Oil filter cap: 15 Nm) to prevent overtightening and stripping.
  • Crush Washers:– Replace the copper or aluminum crush washers/gaskets on the drain bolts every time to ensure a proper seal.
  • Oil Filter Direction:– Note the orientation of the oil filter upon removal and match during installation. Install a new filter at each oil change for optimal protection.
  • Environmental Care:– Never dispose of oil or filters in household trash or down the drain. Always use certified collection and recycling centers.
  • Interval:– Oil replacement intervals may vary by rider conditions, but Sherco recommends replacement every 15 engine hours for aggressive off-road use or a maximum of 100 hours under milder conditions.

This procedure ensures your Sherco will run smoothly, maximizing reliability and longevity on any track or trail.

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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.