How to Change the Oil in a 2024 Husqvarna FS 450

Shop parts for a 2024 Husqvarna FS 450 Dirt Bike.

Keeping your 2024 Husqvarna FS 450 running strong depends on regular maintenance, with oil changes at the heart of the process. Below, MotoSport.com provides a comprehensive step-by-step guide designed specifically for this model—including all tools required, a breakdown of each task, and essential call-outs to ensure you maintain your FS 450 with confidence.

Tools and Supplies Needed

  • Socket wrench set (with appropriate metric sockets, typically 8mm–13mm for Husqvarna drain and cover bolts)
  • Torque wrench (to ensure accurate tightening)
  • Oil drain pan
  • Funnel
  • Measuring cup
  • Contact cleaner or degreaser (optional, for cleaning parts and spills)
  • New engine oil (Refer to owner’s manual for oil type; most FS 450s use high-quality 4-stroke synthetic oil)
  • New oil filter (OEM or high-quality aftermarket)
  • New O-rings/gaskets if required (recommended to prevent future leaks)
  • Rags or shop towels
  • Gloves (recommended for safety and cleanliness)
  • Skid plate removal tool (if equipped with skid plate)

Steps to Change the Oil

  1. Warm Up the Engine
    Start the bike and let it idle for 3–5 minutes in a well-ventilated area.
    This ensures the oil thins, allowing contaminants to drain completely.
  2. Secure the Bike
    Place the FS 450 on a stable stand or lift to prevent tipping. Ensure the bike is upright, especially when checking the sight glass later.
  3. Remove Skid Plate (If Equipped)
    Use the appropriate tool to take off the skid plate to access the drain plug easily.
  4. Remove the Oil Drain Plug
    Position an oil drain pan under the engine. Using a socket wrench, carefully loosen and remove the oil drain plug.
    Let the oil drain completely. Inspect the plug and O-ring; replace if worn or damaged.
  5. Remove the Oil Filter Cover
    Locate and remove the oil filter cover bolts.
    Pull out the old filter, noting its orientation for proper reinstallation.
  6. Inspect and Replace the Oil Filter
    Install the new filter—some Husqvarna owners recommend "priming" the new filter by dipping it in fresh oil before installation to ensure immediate lubrication upon startup.
  7. Inspect and Clean Oil Screens
    The 2024 FS 450 uses two oil screens. Remove, clean, and reinstall these as contamination can affect oil flow and engine health.
  8. Reinstall Components
    Replace the oil filter cover, drain bolt, and oil screens, tightening bolts to manufacturer torque specifications (refer to the service manual for exact specs; overtightening can strip threads or crack covers).
  9. Add New Oil
    Remove the oil fill cap. Using a funnel, add 1,200 ml (1.2L) of high-quality 4-stroke oil, unless otherwise specified in your owner’s manual. Always verify the volume for your exact FS 450 model year.
  10. Check Oil Level
    Replace the fill cap. Start the bike and let it idle for several minutes, then turn it off and allow the oil to settle.
    Check the oil sight glass: the oil should be between halfway and three-quarters up in the window.
    On the 2024 FS 450, there is a red ring in the sight glass. When cold, oil should reach the bottom of the ring; when warm, the level should be between marks A and B.
  11. Clean Up and Inspect
    Wipe down any spilled oil, check for leaks at the drain bolt and filter cover, and reinstall the skid plate (if removed).

Model-Specific Call-Outs

  • The 2024 Husqvarna FS 450 uses a 450cc single-cylinder engine shared with KTM, so processes and oil volumes are nearly identical to their platform-mates.
  • Oil Change Interval: For typical maintenance, Husqvarna recommends oil changes every 6,000 kilometers (approx. 4,000 miles). For race or competition use, consider more frequent changes.
  • Always prime the new oil filter (by coating with oil) prior to installation to prevent possible dry starts.
  • The oil sight glass on the 2024 model features a red ring and specific marks for cold and warm oil checks.
  • Use only recommended oils and filters to avoid warranty or engine issues.
  • Tighten bolts to manufacturer torque specs to prevent fastener or case damage.

Final Tips for FS 450 Owners

  • Properly dispose of used oil and filters at an authorized recycling center.
  • Visually inspect for leaks during regular riding and change the oil after muddy or wet conditions for optimal performance.
  • Always consult your owner’s manual for any updates or changes unique to your build year.

Changing your dirt bike oil at home saves money and ensures your FS 450 stays ready for race day. Trust MotoSport.com for all your Husqvarna maintenance needs.

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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.