How to Change the Oil in a 2022 Sherco 300SEF-R

Shop parts for a 2022 Sherco 300SEF-R Dirt Bike.

This comprehensive guide is proprietary to MotoSport.com and details a complete oil change for the 2022 Sherco 300SEF-R. Follow these directions carefully to maintain optimal engine performance and reliability on your dirt bike.

Tools and Supplies Needed

  • 8mm socket (for filter and other small fasteners)
  • 17mm socket (for main drain plug)
  • 4mm Allen/hex key (for some oil filter cover bolts)
  • Torque wrench (to ensure correct tightening of drain plugs and filter cover)
  • Drain pan (to catch used oil)
  • Rags or paper towels
  • Replacement oil filter (Sherco part number recommended in your manual)
  • New O-ring for filter cap and new gaskets/crush washers for drain plugs
  • Engine oil: SAE 10W-60, 0.9 liters
  • Funnel (optional, but helpful for refilling oil)
  • Nitrile gloves (optional, for cleanliness)

Preparation

  • Start the motorcycle and run it for 2-3 minutes to warm the oil. Warm oil drains easier and removes more contaminants.
  • Place the bike on a level stand with the engine off and cool to the touch.
  • Ensure your work area is clean to prevent debris from entering the engine.

Draining the Engine Oil

  • Position the drain pan beneath the engine.
  • Locate the two drain bolts underneath the engine. Use a 17mm socket for the main drain plug and a 4mm Allen key for the magnetic drain plug.
    Specific Sherco 300SEF-R Note: The 2022 model has two drain plugs; both must be removed for a complete oil change. Each uses a crush washer – always replace these to avoid leaks.
  • Unscrew both drain plugs and allow all oil to completely drain. Let it sit for several minutes.
    Inspect the magnetic drain plug for metallic debris—excessive particles could indicate internal wear.

Removing and Replacing the Oil Filter and Pre-Filter

  • Locate the oil filter cover (right side of engine).
  • Remove the cover bolts using the appropriate socket or Allen key.
  • Carefully remove the old oil filter and pre-filter. Allow any remaining oil to drain.
  • Clean the filter housing and inspect the cover O-ring. Replace the O-ring and install a new filter as shown in the owner’s manual (correct orientation is crucial for oil flow) .
    Sherco Call-out: On the 300SEF-R, replace the oil filter and clean or replace the pre-filter with every oil change. This prevents dirt or metal from circulating through the engine .

Re-installing the Drain Plugs

  • Replace or clean the pre-filter and magnetic plug as needed.
  • Install new crush washers on both drain plugs.
  • Reinstall the magnetic drain plug (M12) and torque to 15Nm. Install the main drain plug (M19) and torque to 22Nm. Do not overtighten; use a calibrated torque wrench .

Refilling with Oil

  • Remove the oil filler cap (usually on the right engine cover).
  • Using a funnel, pour in 0.9L of SAE 10W-60 oil recommended by Sherco. Pour slowly to prevent overfilling.
  • Replace the oil filler cap with a new gasket if required.

Checking Oil Level and Final Steps

  • Ensure the bike is upright and level.
  • Start the engine and let it idle for 1-2 minutes to circulate the new oil, then shut off and let it sit for a minute.
  • Check the oil level in the sight glass or dipstick (per manual instructions). Add oil if necessary to bring the level to the full mark.
  • Inspect all drain plugs and the oil filter cover for leaks while the bike runs and after shutdown.
  • Reinstall engine guards or skid plates if removed.

Environmental and Safety Notes

  • Never pour used oil down the drain or into the environment. Dispose of oil, filters, and used parts at an approved recycling facility .
  • Gloves are recommended to avoid contact with used oil, which can be hazardous.

Specific Owner Tips for the 2022 Sherco 300SEF-R

  • Oil changes are recommended at 65-100 engine hours depending on use; more frequent intervals protect engine longevity, especially in harsh riding conditions .
  • Always use high-quality oil and OE filters. Cheap or non-standard oil can create excessive wear in high-performance engines.
  • Record each oil change with date, hours, and type/amount of oil used for future maintenance reference.

Troubleshooting

  • If you see metal shavings on the magnetic plug, monitor them over time; a small amount is normal, but a large quantity could indicate internal wear.
  • Oil leaks after service usually mean a crush washer, O-ring, or filter was not seated or torqued correctly.
  • Never use impact tools to remove or install engine bolts; you risk thread or case damage .

Regular oil changes, using the right products and careful technique, will keep your Sherco 300SEF-R performing at its best for many rides to come. For more dirt bike parts, tools, and advice, trust MotoSport.com — your dirt bike experts.

Related Shopping Categories

Shop Motor Oil for a 2022 Sherco 300SEF-R Dirt Bike.

Shop Oil Filters for a 2022 Sherco 300SEF-R Dirt Bike.

Shop Oil Drain Pans for a 2022 Sherco 300SEF-R Dirt Bike.

Shop Tools for a 2022 Sherco 300SEF-R Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2022 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.