How to change the oil in a 2025 Sherco 450 SEF FACTORY Dirt Bike

How to Change the Oil in a 2025 Sherco 450 SEF FACTORY

Shop parts for a 2025 Sherco 450 SEF FACTORY Dirt Bike.

Regular oil changes are crucial to keep your 2025 Sherco 450 SEF FACTORY running smoothly and performing at its peak. This guide, proprietary to MotoSport.com, covers the essential tools, detailed steps, and model-specific notes every owner should know when changing the oil on this high-performance dirt bike.

Tools & Supplies Needed

• 8mm socket
• 17mm socket
• 4mm Allen wrench
• Oil drain pan
• Funnel
• Shop rags or paper towels
• New oil filter
• New crush washers (recommended for drain bolts)
• High-quality SAE 10W-60 oil (approximately 1.1 liters)
• Torque wrench
• Gloves (optional, recommended)

Steps to Change the Oil

• Warm Up the Engine
  • Start and idle the engine for 3–5 minutes to warm up the oil. This helps it drain fully with suspended contaminants.
• Turn Off and Secure Bike
  • Stop the engine. Place the bike securely on a stand to ensure it’s upright and stable.
• Remove Engine Skid Plate (if equipped)
  • If your Sherco is equipped with a skid plate, remove it with the appropriate socket or Allen wrench for easier access to the drain plugs.
• Locate and Remove Drain Bolts
  • There are two drain bolts on the bottom of the engine. Use the 17mm socket to loosen and remove both.
  • Allow the oil to drain completely into your oil pan. Be patient—this may take a few minutes.
• Remove the Oil Filter
  • Locate the oil filter cover on the right side of the bike (refer to page 27 in the owner’s manual for diagrams).
  • Use an 8mm socket (or 4mm Allen, depending on fasteners) to remove the oil filter cover bolts.
  • Carefully pull out the old oil filter. Take note of the direction it is installed.
• Install the New Oil Filter
  • Pre-lube the new filter with a small amount of clean oil.
  • Install the new filter in the same orientation as the old one.
  • Reinstall the cover and torque the bolts to manufacturer recommendations: 15 Nm for both filter and drain plug covers.
• Clean and Inspect Magnetic Drain Plugs
  • Wipe the magnetic tips of both drain plugs with a rag. Remove any metal particles or debris.
  • Fit new aluminum crush washers to the drain plugs (recommended for sealing).
• Reinstall and Torque the Drain Plugs
  • Thread in both drain plugs by hand to avoid cross-threading, then torque to 20 Nm and 15 Nm as specified for each plug.
• Add New Oil
  • Remove the oil filler cap (upper right side of the engine).
  • Using a funnel, add 1.1 liters of high-quality SAE 10W-60 oil.
  • Replace the filler cap.
• Check Oil Level
  • With the bike on level ground, check the oil level through the sight glass on the right crankcase cover.
  • Add oil as needed to reach the proper level.
• Start Engine and Re-Check Oil Level
  • Start the engine and let it idle for 1–2 minutes. Shut it off and let it sit for a minute.
  • Confirm the oil level is correct and check for leaks around the drain and filter areas. Top off if necessary.
• Properly Dispose of Old Oil and Filter
  • Dispose of used oil and the old filter at an approved recycling center. Do not pour oil down the drain or into nature.

Sherco 450 SEF FACTORY Model-Specific Call-Outs (2025)

• Two Drain Bolts: The Sherco 450 SEF FACTORY uses two separate oil drain bolts. Both must be removed to ensure all oil drains from the crankcase. Failing to remove both can result in contaminated oil being left behind.
• Magnetic Drain Plugs: Check the magnetic tips for metal debris. Small particles after break-in are normal, but excessive shavings could indicate a problem.
• Oil Fill Location: The fill port is located just under the titanium exhaust on the right side, which can be a tight fit with a funnel.
• Torque Values: Always use a calibrated torque wrench. Over-tightening can strip aluminum threads.
• Oil & Filter Change Interval: Sherco recommends changing both oil and filter every 15 hours of competition use, or every 1,000 km for recreational riding. Replace the filter at every oil change.
• Oil Type: Only use fully synthetic SAE 10W-60 oil meeting Sherco’s specs. Lower weights can lead to premature wear.
• Crush Washers: Replacing the crush washers each service is strongly recommended to ensure a leak-free seal on both drain bolts.
• Environmental Note: Never dispose of oil or filters improperly—always use an authorized collection center.

Final Inspection

• Inspect the drain plugs, filter cover, and fill cap for leaks after your first ride.
• Keep a maintenance log with date, odometer hours, and type/amount of oil used.

Changing the oil on your 2025 Sherco 450 SEF FACTORY is straightforward with the right tools, proper technique, and attention to detail. For all your dirt bike maintenance needs, trust MotoSport.com for expert tips, quality parts, and more.

Related Shopping Categories

Shop Motor Oil for a 2025 Sherco 450 SEF FACTORY Dirt Bike.

Shop Oil Filters for a 2025 Sherco 450 SEF FACTORY Dirt Bike.

Shop Oil Drain Pans for a 2025 Sherco 450 SEF FACTORY Dirt Bike.

Shop Tools for a 2025 Sherco 450 SEF FACTORY Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2025 Sherco 450 SEF 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.