How to Change the Oil in a 2024 Husqvarna FX450: A Complete Guide

Shop parts for a 2024 Husqvarna FX450 Dirt Bike.

Changing the oil in your 2024 Husqvarna FX450 is essential for peak performance and engine longevity. This detailed, MotoSport.com proprietary guide covers all the tools needed, step-by-step procedures, and specific call-outs for this make and model.

Tools and Supplies Needed

  • Socket wrench set (8mm, 10mm, and 13mm sockets recommended)
  • Torque wrench
  • Oil catch pan
  • New oil filter (OEM or high-quality aftermarket)
  • Fresh engine oil (Husqvarna recommends 10W-50 synthetic, 1200 ml/1.2L for the FX450, but always confirm in your owner’s manual)
  • Funnel
  • Replacement drain plug washer
  • Shop towels or rags
  • Gloves and safety glasses

Preparation Steps

  • Start your FX450 and let it idle for several minutes to warm up the oil, which helps it drain out more completely.
  • Park the bike securely on a stand or level ground and turn off the engine.
  • Lay down shop towels to catch any spills and put on your gloves and safety glasses.

Step 1: Remove the Skid Plate and Locate Components

  • Remove the skid plate if equipped for easier access to the oil drain bolts and filter cover.
  • Locate the drain bolt, oil filter cover, and oil screens (there are two, one on each side of the crankcase).

Step 2: Drain the Old Oil

  • Place the oil pan directly under the drain bolt.
  • Using a socket wrench, carefully loosen and remove the main engine oil drain bolt. Allow oil to drain completely.
  • Remove both oil screens (using the correct size socket if required) and inspect them for debris. Clean any particles from the screens thoroughly and set aside.
  • After draining, replace the drain bolt washer with a new one for a proper seal, and reinstall the drain bolt using a torque wrench set to the manufacturer’s specification (check the FX450 manual, typically around 15 Nm).

Step 3: Replace the Oil Filter

  • Remove the oil filter cover using a socket.
  • Pull out the old oil filter and discard it properly.
  • Prime the new oil filter by dipping it in fresh oil. This ensures the filter is saturated and prevents dry starts according to expert tips specific to KTM/Husqvarna/GasGas 450, 500, and 501 engines.
  • Install the new oil filter, then replace and torque the oil filter cover bolts as specified in the owner’s manual (typically around 8 Nm).

Step 4: Clean and Reinstall Oil Screens

  • Reinstall the cleaned oil screens in their respective positions.
  • Torque the oil screen caps to the value specified in the FX450 manual.

Step 5: Add New Engine Oil

  • Remove the oil fill cap and insert a funnel into the opening.
  • Pour in 1200 ml (1.2L) of 10W-50 synthetic oil. Always confirm the specification in your owner’s manual as this can change with model updates.
  • Reinstall the oil fill cap.

Step 6: Check Oil Level

  • Start the engine and let it idle for 2-3 minutes to circulate oil through the filter and system.
  • Shut off the engine and allow the oil to settle for a couple of minutes.
  • Verify the oil level using the sight glass. On the FX450, the oil should be at least halfway up to three-quarters of the window, or between the marks on the red ring if equipped.
  • If necessary, add oil incrementally until the proper level is achieved.

Step 7: Reinstall Skid Plate and Clean Up

  • Reattach the skid plate using the original bolts.
  • Carefully clean off any spills and dispose of used oil and filters at a certified recycling center, never down a drain or in the trash.

2024 Husqvarna FX450-Specific Tips & Callouts

  • Use only high-quality full synthetic oil that meets Husqvarna specifications for optimal clutch and engine protection.
  • 1200 ml (1.2L) is the typical fill for a 2024 FX450, but check the manual or the site glass for precise levels.
  • In cold temperatures, always check oil via the sight glass before each ride. The FX450 may require oil top-offs if ridden hard or in muddy conditions.
  • If you see metal particles on the screens, monitor for ongoing issues and consult a qualified mechanic if they persist.
  • Priming the new filter is crucial on modern Husqvarna models; it helps prevent dry starts and improves engine longevity.
  • Always use a torque wrench for drain bolts and filter covers to avoid stripped threads in magnesium cases.

Final Thoughts

  • Routine oil changes and inspections are vital to keep your 2024 Husqvarna FX450 running at its best.
  • For further performance or troubleshooting questions, reference your owner’s manual or consult MotoSport.com’s expert support team.

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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.