How to Change the Oil in a 2019 Husqvarna FS 450

Shop parts for a 2019 Husqvarna FS 450 Dirt Bike.

Changing the oil in your 2019 Husqvarna FS 450 is essential for maintaining peak engine performance and longevity. This guide will take you through the task step-by-step, including the tools you need, the procedure, and important model-specific details every owner should know.

Tools and Materials Needed

  • Socket set (for oil drain plug and other fasteners)
  • Torque wrench (to ensure proper bolt tightness)
  • Oil catch pan
  • Rags or shop towels
  • Engine oil (SAE 10W/50) – 1,200 ml (1.2 L) capacity
  • New oil filter
  • New crush washer (for the drain plug, optional but recommended)
  • Pliers
  • Funnel
  • Parts cleaner/contact cleaner (for cleaning components)
  • Gloves
  • Measuring cup (if your oil container doesn't have volume marks)

Step-by-Step Oil Change Procedure

  1. Warm up the Engine
    Start your Husqvarna FS 450 and let it idle for a few minutes to bring the oil up to operating temperature. This helps suspend contaminants in the oil and allows for a more complete drain.
  2. Remove the Skid Plate (if equipped)
    If your bike has a skid plate, use your socket set to detach it. Set the fasteners aside safely.
  3. Access the Drain Plug(s)
    Place the oil catch pan beneath the engine. Locate the oil drain plug with magnet (refer to your owner's manual for the exact location, but typically under the engine). Use your socket or wrench to remove the plug. Let the oil drain completely.
    Note: On the 2019 FS 450, always replace the drain plug's crush washer to prevent leaks.
  4. Remove and Clean the Oil Screens
    The FS 450 features one or more oil screens/screw plugs–typically one by the oil pump and potentially another on the engine cases. Remove these with the appropriate socket. Let any remaining oil drain out.
    Clean the screens using parts/contact cleaner and a rag. Carefully inspect for metal shavings or debris; a small amount is normal, but excess metal may indicate internal engine issues.
  5. Remove and Replace the Oil Filter
    Locate and remove the oil filter cover bolts. Take out the used oil filter and install a new one–prime the filter with a bit of fresh oil to prevent a dry start.
    Reinstall the oil filter cover and torque the bolts to specification (verify in your owner's manual).
  6. Reinstall the Drain Plug and Oil Screens
    Once the oil has fully drained, reinstall the cleaned oil screens and the drain plug with a new crush washer.
    Torque all fasteners to Husqvarna's recommended specs:
    • Oil drain plug: 12 Nm (8.9 lbf ft)
    • Oil screen plug (if present): 20 Nm (14.8 lbf ft)
    Do not overtighten–follow the manual's torque specs exactly.
  7. Refill with Engine Oil
    Remove the oil fill cap. Using a funnel, pour 1200 ml (1.2 liters) of SAE 10W/50 engine oil into the crankcase. On your FS 450, always verify in the owner's manual for the most up-to-date spec, but 1.2L is standard for a full change.
    Replace the oil fill cap securely.
  8. Check Oil Level
    Start the engine and let it run for 2–3 minutes, then shut it off and allow the oil to settle.
    Inspect the oil level through the sight glass–it should sit halfway to three-quarters up the window when the bike is upright on level ground. Add oil if necessary to reach the correct level.
    An overfill can damage the engine; always check the sight glass.
  9. Reinstall Skid Plate
    Bolt the skid plate back on, if applicable, and ensure all tools and rags are removed from the work area.
  10. Final Inspection
    Check around the drain plug, oil filter cover, and every area you opened for leaks. Wipe away any excess oil.

2019 Husqvarna FS 450–Specific Call-Outs

  • Use only SAE 10W/50 oil as specified in your manual–the engine is engineered for this viscosity.
  • Capacity for a full oil and filter change is 1,200 ml (1.2 L)–overfilling can cause damage.
  • The engine has a magnetic drain plug–always inspect it for metallic debris during a change.
  • Oil screens must be removed and cleaned at every service interval to ensure proper oil flow.
  • Torque all bolts to the manufacturer's specifications to avoid stripping threads or causing leaks.
  • Use a new crush washer with the drain plug at every oil change to prevent leaks.

Keeping your 2019 Husqvarna FS 450's oil fresh ensures reliability and top-tier performance on every ride. Always consult your owner's manual for the most detailed information, and perform routine maintenance at the recommended intervals.

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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.