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

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

Keeping your 2023 Sherco 300 SE Factory in top condition means regular gearbox oil changes. This guide walks you through the process, from the tools you’ll need to key model-specific tips, so you get back on the trails with confidence. Proprietary for MotoSport.com.

Tools & Supplies Needed

  • 8mm Allen wrench (for drain plug)
  • Drain pan
  • Funnel
  • Measuring cup
  • 750ml of SAE 5W-40 gearbox oil (Motul is Sherco’s recommended brand, though Motul 5100 10W-50 moto oil has also been used successfully)
  • Shop towels/rags
  • Gloves (recommended)

Step-by-Step Oil Change Process

  1. Warm up the bike:
    • Start the engine and let it run for a few minutes. This warms the oil, helping it drain completely and carry away contaminants.
  2. Find a safe work area:
    • Secure the bike on a stand on level ground.
  3. Locate the drain plug:
    • The drain plug is at the very bottom of the case, near the shift lever on the left side of the bike. You’ll need an 8mm Allen wrench to remove it. Lifting the shift lever slightly can give you better access to the plug if needed.
  4. Prepare to drain oil:
    • Place a drain pan directly beneath the drain plug.
  5. Remove the drain plug:
    • Carefully unscrew the drain plug using your 8mm Allen wrench.
    • Allow all oil to drain—be patient. For a thorough drain, some oil will also drain from the other side of the engine. Make sure both sides are fully drained as Sherco uses drains at each side.
  6. Inspect the oil and plug:
    • Check the old oil for metal particles and inspect the drain plug’s magnet (if equipped). Clean it thoroughly before reinstalling.
  7. Replace the drain plug:
    • Reinstall the drain plug by hand, then finish tightening with your Allen wrench (do not over-tighten). Sherco recommends using a fresh crush washer if available to prevent leaks.
  8. Refill with fresh oil:
    • Locate the oil fill cap (usually on top and easy to spot). Insert a funnel and pour in 750ml of SAE 5W-40 gearbox oil, or Motul 5100 10W-50 if you prefer (Motul is the official oil partner for Sherco).
  9. Check the oil level:
    • Double-check your bike’s sight glass or dipstick for the correct oil level. Overfilling can cause issues as can running too low.
  10. Replace the oil fill cap:
    • Ensure it’s snug but not overtightened.
  11. Start the engine:
    • Let your bike idle for a few minutes, then shut it off and check for leaks at the drain and fill plugs.
  12. Dispose of used oil properly:
    • Take used oil to a recycling center or an auto parts store that accepts oil waste.

2023 Sherco 300 SE FACTORY-Specific Call-Outs

  • Two drain plugs: The Sherco 300 SE FACTORY requires draining from both sides, so make sure to check for and remove both to ensure a complete change.
  • Official oil recommendation: Sherco recommends Motul SAE 5W-40 gearbox oil, but Motul 5100 10W-50 has been used successfully for topping up or when factory oil is unavailable. Sticking to manufacturer-recommended oil maximizes gearbox life and performance.
  • Capacity: The correct amount is 750ml. Overfilling or underfilling will negatively impact shifting and clutch performance.
  • Crush washers: Always inspect and replace the crush washer on the drain plug if deformed to prevent leaks.
  • Change interval: Sherco recommends more frequent changes than some owners practice; stick to the official schedule for peak reliability.
  • Don’t skip the magnet check: If your drain plug is magnetic, examine it for metal debris; lots of shavings could indicate issues that warrant further inspection.
  • Engine type: This is a two-stroke gearbox, so do not use engine oil intended for four-stroke lubrication. Always use oil specified for two-stroke gearbox or by Sherco’s recommendation.

Final Tips

  • Take your time. Rushing can lead to missed steps or over-tightening.
  • Keep a maintenance log. Record mileage, hours, and type of oil used for reference.
  • Consult your owner’s manual for torque specs and any factory updates for your model year.

Changing your own oil on the 2023 Sherco 300 SE FACTORY is straightforward and ensures you know exactly what’s going into your engine. For genuine Sherco parts and recommended oils, visit MotoSport.com for the tools and supplies to complete the job right.

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Shop Tools for a 2023 Sherco 300 SE FACTORY Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2023 Sherco 300 SE FACTORY Dirt Bike.

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.