How to Change the Oil in a 2004 Husqvarna TE450

Shop parts for a 2004 Husqvarna TE450 Dirt Bike.

Keep your 2004 Husqvarna TE450 running strong and reliable with regular oil changes. Here’s a comprehensive, step-by-step guide tailor-made for this bike. MotoSport.com ensures you get it done right, every time.

Tools and Supplies Needed

  • Quality four-stroke motorcycle oil (consult your manual for the best viscosity and type; many owners use 10W-50 or 10W-60 synthetic)
  • Replacement oil filter
  • New crush washer (for drain plug)
  • Drain pan
  • Rags or shop towels
  • Rubber gloves
  • Contact cleaner (optional for spills)
  • Measuring cup or beaker
  • 10mm, 13mm sockets or T-handles
  • 5mm Allen key or hex socket
  • Snap ring pliers (in case your model’s oil filter is retained by a circlip)
  • Pliers (for stubborn parts)
  • Torque wrench
  • Safety glasses

Preparation Steps

  • Start and run your TE450 for a few minutes to warm the oil. This helps it drain more readily and removes debris from the engine’s bottom.
  • Ensure your bike is on a stable, flat surface and well-ventilated area.
  • Remove the skid plate if equipped (some 2004 models came with a factory plate).
  • Clean around the oil drain plugs to prevent dirt from falling into the engine or oil stream.

Draining the Old Oil

  • Locate the main oil drain plug beneath the engine. Also note, the TE450 features multiple drain points, including a screen cover and possibly a second oil bolt–refer to your owner's manual for your specific configuration.
  • Place your drain pan under all drain locations.
  • Remove the drain plug(s) (usually 13mm) and allow the oil to flow out completely.
  • While the oil drains, remove the fill cap on top of the engine to promote faster draining.
  • Remove the oil filter cover using a 10mm wrench or the appropriate Allen key, depending on your bike’s configuration.
  • On the 2004 TE450, there are generally two oil filters: one large cylindrical filter and a smaller secondary filter housed on the left engine case. The smaller cover may be plastic, so take care not to strip the hex when removing.
  • Pull out both filters; note their orientation for correct reinstallation.

Inspect and Clean Components

  • Inspect old filters for metal debris, which could indicate engine wear or internal issues.
  • Wipe out the filter cavity with a clean rag and check the O-rings and sealing surfaces for damage. Replace O-rings if necessary.
  • If your bike has a mesh oil strainer, pull it out and clean thoroughly before reinstalling.

Installing the New Oil Filter

  • Install new oil filters in the same orientation as removed. Lightly oil the rubber O-ring or gasket of the new filter for better sealing.
  • Reinstall the filter cover. Torque to specification—Husqvarna recommends 25Nm (18.4 ft/lb) for both the oil filter cover and the drain plug. Be meticulous here: the smaller cover may be plastic/composite and overtightening risks cracking or stripping the hex.
  • Install a new crush washer on the drain plug; reinstall and torque to 25Nm.

Filling with Fresh Oil

  • Ensure all drain bolts, screens, and covers are in place and properly torqued.
  • Using a funnel, add the correct amount of oil. The 2004 TE450 typically holds about 1.3 liters (1.4 US quarts), but always check the sight glass or dipstick and your service manual.
  • Replace the oil fill cap.

Start and Check

  • Start the engine and let it idle for a few minutes.
  • Check for leaks at the drain plug and filter covers.
  • With the engine off, let it sit for a minute and check the oil level via dipstick or sight glass. Top off if needed–do not overfill.

Proper Disposal

  • Always dispose of used oil and filters at an approved recycling center. Never pour oil down the drain or onto the ground.

Special Call-Outs for the 2004 Husqvarna TE450

  • Be particularly careful with the torque when reinstalling the smaller side filter plug. Many owners have rounded or damaged this part by overtightening due to its plastic material—use a torque wrench set to 25Nm and do not exceed this rating.
  • This model uses two separate oil filters; ensure both are replaced and correctly seated each time.
  • Check the oil strainer at every oil change for metal debris–a good indicator of engine health.

Conclusion

Regular oil changes on the 2004 Husqvarna TE450 are key to engine performance and longevity. Use the correct tools and oil, take your time with the torque settings, and follow safe disposal practices to keep your TE450—and our environment—running clean and strong.

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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.