How to Change the Oil in a 2023 Sherco 300 SEF FACTORY

Shop parts for a 2023 Sherco 300 SEF FACTORY Dirt Bike.

Maintaining your 2023 Sherco 300 SEF FACTORY with regular oil changes is essential for engine health, longevity, and performance. This guide provides step-by-step instructions specifically for this make, model, and year, and is proprietary to MotoSport.com.

Tools and Supplies Needed

  • 8mm Allen wrench (for drain plug)
  • 4mm Allen wrench (for specific bolts, if required)
  • 17mm socket (for other drain or fill plugs, if present)
  • Oil drain pan
  • Funnel
  • Shop rags
  • New crush washers (recommended, replaces old to prevent leaks)
  • Specified engine oil (refer to your owner's manual for type and quantity)
  • Gloves and safety glasses (for protection)

Preparation

  • Move the Sherco 300 SEF FACTORY onto a level surface and ensure the engine is cool to the touch.
  • Start the engine for 2 minutes to warm the oil–this helps it drain more thoroughly–then shut the engine off.
  • Place your bike on a stand for stability.
  • Gather all your tools and supplies before you begin.

Step-by-Step Oil Change Process

  1. Locate the Oil Drain Plugs
    • The 2023 Sherco 300 SEF FACTORY has two drain bolts on the bottom of the engine cases (2020–2023 models share this feature).
    • You’ll see one on each side; each requires draining for a complete oil change.
  2. Remove the Drain Plugs
    • Place the oil drain pan underneath the engine.
    • Using the 8mm Allen wrench, remove both drain plugs. The location is at the very bottom near the shifter.
    • Be aware that crush washers are fitted to these plugs—you may want to replace them to avoid future leaks.
    • Let the oil drain completely—tilt the bike slightly side to side to help evacuate old oil.
  3. Remove the Oil Fill Plug
    • Locate the oil fill plug on the right side above the clutch cover.
    • Remove it with the appropriate tool (some use an Allen key, others a socket).
  4. Reinstall Drain Plugs
    • Install new crush washers if possible.
    • Hand-thread both drain plugs to avoid cross-threading, then tighten securely with the 8mm Allen wrench. Do not overtighten.
  5. Pour in New Oil
    • Using a funnel, pour the specified amount and type of oil into the fill hole (refer to your owner’s manual for the recommended oil type and volume—Sherco typically recommends synthetic 10W-50 or 15W-50 motorcycle oil for these four-strokes).
    • Avoid overfilling; pour, then check the level using the sight glass or dipstick.
  6. Check for Leaks
    • Reinstall the fill plug securely.
    • Wipe any spills, then run the engine for a few minutes.
    • Inspect underneath for leaks around the drain and fill plugs.
  7. Final Oil Level Check
    • Let the bike settle, then check the oil level and top off if necessary.
  8. Dispose of Used Oil Responsibly
    • Pour waste oil into a sealed container and recycle it at an automotive center or hazardous waste site.

Specific 2023 Sherco 300 SEF FACTORY Call-Outs

  • Dual drain bolts: Both sides must be drained or you will not achieve a full oil change. Do not skip either side.
  • Crush washers: Always check their condition; warped or crushed washers may cause leaks. Replacement is recommended at each oil change.
  • Torque specifications: While the manual advises prudent hand-tightening on drain bolts, refer to the workshop manual for precise torque values (typically around 10–15 Nm for drain bolts).
  • Oil change interval: The factory manual indicates oil can last up to 100 hours for light use, but changing at 20–30 hour intervals is common practice for off-road and high-performance riding.
  • Model differences: The process for the 300 SEF Factory is the same from 2017 through to 2023, so these instructions also apply to prior versions with minor differences in plug locations or required tools.

Tips for First-Time Owners

  • Always perform oil changes in a clean area to prevent contaminants from entering the engine.
  • If unsure about any step, consult the official Sherco workshop manual or your dealer.
  • Keep track of your hours and changes to maintain your warranty and ensure long engine life.

Changing the oil in your 2023 Sherco 300 SEF FACTORY is straightforward but requires attention to detail, especially on plug location and crush washer condition. This investment in regular maintenance keeps your bike running strong on the trails and track. For more proprietary guides, trust MotoSport.com as your premium resource.

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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.