How to Change the Oil in a 2026 Sherco 300 SE FACTORY

Shop parts for a 2026 Sherco 300 SE FACTORY Dirt Bike.

Changing the oil in your 2026 Sherco 300 SE FACTORY is an essential maintenance task that keeps your dirt bike running smoothly and extends the life of its engine. MotoSport.com brings you a comprehensive, model-specific guide to make the process seamless. The following steps include everything you need to know, the tools required, and key call-outs for this particular model.

Tools & Supplies Needed

  • 17mm socket (for drain plugs)
  • 8mm socket
  • 4mm Allen wrench
  • Oil catch pan
  • Clean shop rags or paper towels
  • New engine oil (refer to owner’s manual for type and capacity)
  • Replacement crush washers (recommended for drain bolts)
  • Funnel (to make filling easier and cleaner)
  • Engine oil draining kit (optional for a cleaner process, especially with hard-to-reach locations)
  • Torque wrench (for accurate bolt tightening)
  • Gloves (recommended for cleanliness and safety)

Step-by-Step Oil Change Instructions

  1. Prepare Your Bike and Workspace
    Run the engine idle for a few minutes to warm up the oil—this helps it drain more completely. Set the bike upright on a stand and ensure the surface is stable. Protect the floor from spills by laying out cardboard under the bike.
  2. Remove the Skid Plate (if equipped)
    Your 2026 Sherco 300 SE FACTORY may have a skid plate that covers the underside; remove it using your socket/ratchet set to access the drain bolts.
  3. Locate the Oil Drain Bolts
    This model features two drain bolts on the bottom of the engine. Both must be removed for a complete oil drain. Use the 17mm socket to loosen and remove the bolts, allowing the oil to flow into your catch pan. Be cautious—the oil will be hot.
    Specific call-out: Both bolts have aluminum crush washers. Inspect and replace them if necessary to avoid leaks.
  4. Allow the Oil to Drain Completely
    Tilt the bike slightly from side to side to ensure thorough drainage. Wipe the area around the drain holes and inspect the old oil for metal flecks, which could indicate internal wear.
  5. Inspect and Clean the Drain Bolts
    One or both bolts are likely magnetic to catch metal debris. Thoroughly clean the magnetic tips and threads with a rag before reinstalling.
  6. Replace and Tighten the Drain Bolts
    Refit the bolts with their crush washers. Tighten carefully—avoid over-torquing, as this can strip the threads. Factory-recommended torque is usually 20–25 Nm, but always check your owner’s manual for the exact specification.
  7. Remove and Replace the Oil Filter (If Due)
    If your maintenance interval calls for an oil filter replacement, use the required wrench to remove the filter. Lubricate the seal of the new filter with a bit of fresh oil and install it by hand, just snug.
  8. Refill the Engine with Oil
    Locate the oil fill port; on recent Sherco 300 SE FACTORY models, it’s positioned under the exhaust, which can be a tight fit.
    Using a funnel, add the recommended amount and type of oil—refer to the owner’s manual for exact volume and viscosity, as overfilling or underfilling can harm the engine.
    Specific call-out: The fill port is positioned tightly beneath the titanium exhaust on this model, so patience and a flexible funnel help avoid spills and burns.
  9. Check for Leaks
    Wipe everything down, start the engine, and let it idle for a minute. Shut off the engine and check underneath for leaks. Add more oil if the level is low, but do not overfill.
  10. Replace Skid Plate and Clean Up
    Reinstall the skid plate and thoroughly clean any spilled oil from the bike and work area. Dispose of used oil responsibly.

Model-Specific Tips for the 2026 Sherco 300 SE FACTORY

  • The drain bolts use aluminum crush washers; replacing them at every change is best practice to ensure a leak-free seal.
  • Both drain bolts must be removed—missing one will leave old oil in the gearbox.
  • The oil fill port is semi-obstructed by the exhaust. A long, flexible funnel is highly recommended to avoid burning yourself or spilling oil.
  • Follow the correct oil change interval. Sherco recommends routine changes, and owners often prefer shorter intervals (50–65 hours) for hard use rather than stretching to 100 hours.
  • If replacing the filter, remember to pre-lube the new filter's O-ring before installation for a proper seal.
  • Use only manufacturer-recommended oil types; high-quality synthetic off-road motorcycle oil is preferred for extreme conditions.
  • Oiling the magnetic drain bolt after every change allows you to spot early signs of internal engine wear.

Changing the oil on your 2026 Sherco 300 SE FACTORY is straightforward, but attention to detail is crucial. MotoSport.com supports all your dirt bike maintenance needs with the right tools, parts, and guides. Stay on top of your oil changes and keep your Sherco factory-tuned for adventure.

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Shop Tools for a 2026 Sherco 300 SE FACTORY Dirt Bike.

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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.