How to Change the Oil in a 2023 Sherco 300SEF-R: A MotoSport.com Guide

Shop parts for a 2023 Sherco 300SEF-R Dirt Bike.

Changing the oil in your 2023 Sherco 300SEF-R is one of the most important maintenance tasks for engine health and longevity. The following robust guide is tailored for your bike, including specific call-outs every owner should know for this exact make, model, and year.

Tools and Materials Needed

  • 8mm socket
  • 17mm socket
  • 4mm Allen wrench
  • Torque wrench (recommended)
  • Oil drain pan or suitable container
  • New oil filter (replace every oil change)
  • New O-ring for oil filter cap
  • New copper/crush washers for drain plugs
  • Funnel
  • Clean rags or shop towels
  • SAE 10W60 4-stroke motorcycle oil (specifically 0.9L for the refill)
  • Gloves (optional for cleanliness)

Preparation Steps

  • Warm up the engine for a few minutes to help the oil flow out more easily.
  • Place the bike upright on a stable stand.
  • Clean around the drain plug and oil filter area to prevent contamination.

Step-by-Step Oil Change Process

  1. Position Your Catch Pan
    • Slide your drain pan beneath the engine, directly under the drain plugs.
  2. Remove the Drain Plugs
    • Locate the main drain plug (19mm), the magnetic drain plug (12mm), and the pre-filter plug.
    • Carefully unscrew the drain plugs with your sockets and let the oil drain completely.
    • Remove the pre-filter to ensure thorough draining.
    • Inspect the magnetic plug's tip for any metal debris–some fine particles are normal, but excessive shavings indicate internal wear.
  3. Replace Washers and Pre-Filters
    • Replace copper or crush washers on all drain plugs if necessary to prevent leaks.
    • Clean, inspect, and reinstall the pre-filters as shown in the owner's manual.
  4. Remove and Replace the Oil Filter
    • Remove the oil filter cap using your Allen wrench, noting orientation and O-ring position.
    • Replace the oil filter with a new one, ensuring it is installed in the correct direction (refer to owner's manual illustrations).
    • Replace the O-ring on the oil filter cap with a new one to prevent leaks.
  5. Reinstall All Plugs and Filter Cap
    • Install the drain plugs and pre-filters using a torque wrench.
    • Tightening torques:
      • Drain plug (M19): 22Nm
      • Magnetic drain plug (M12): 15Nm
      • Oil filter cap (M45): 15Nm
  6. Refill with Engine Oil
    • Remove the engine oil filler cap.
    • Pour in 0.9 liters of SAE 10W60 motorcycle oil using a funnel for accuracy.
    • Reinstall the oil filler cap.
  7. Check Oil Level
    • Start the engine and let it run for 1-2 minutes. Turn it off and wait a minute for the oil to settle.
    • Check the oil level through the sight glass (make sure the bike is upright). Add oil if necessary.
  8. Final Steps
    • Check for leaks around the drain plugs and filter cap.
    • Dispose of the used oil, filter, and materials at a proper recycling center–never pour oil down the drain or into the environment.
    • Reinstall any skid plate or engine guard if removed.

Special Call-Outs for the 2023 Sherco 300SEF-R

  • This model uses TWO drain plugs (main and magnetic), both must be removed and drained for a proper oil change.
  • The oil filter must be replaced at every oil change for maximum engine protection. Direction of installation matters; follow the owner’s manual image closely when installing the new filter.
  • Always replace the O-rings and crush washers to prevent leaks and maintain warranty eligibility.
  • Add the correct type and amount of oil: SAE 10W60, 0.9L only. Overfilling or using the wrong viscosity can risk internal damage.

Frequently Asked Questions

  • How often should I change the oil? While Sherco suggests up to 100 hours, many riders choose every 20–30 hours or after heavy use for optimal engine health.
  • What type of oil is best? Use only premium 4-stroke motorcycle oil, SAE 10W60, specifically formulated for high-performance engines.
  • Is it necessary to use a torque wrench? Yes, to prevent over-tightening which can damage aluminum threads, and to ensure a proper seal.
Oil, oil filters, and used materials must be deposited at a collection center and never disposed of in the wild. The oil filter should be replaced at each oil change for this model.

Changing your oil is one of the most critical maintenance tasks for your Sherco 300SEF-R and ensures performance ride after ride. For parts, filters, and premium oils, trust MotoSport.com—your dirt bike maintenance partners.

<.-- Content tailored exclusively for MotoSport.com; all rights reserved. -->

Related Shopping Categories

Shop Motor Oil for a 2023 Sherco 300SEF-R Dirt Bike.

Shop Oil Filters for a 2023 Sherco 300SEF-R Dirt Bike.

Shop Oil Drain Pans for a 2023 Sherco 300SEF-R Dirt Bike.

Shop Tools for a 2023 Sherco 300SEF-R Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2023 Sherco 300SEF-R 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.