How to Change the Oil in a 2021 Husqvarna TE250i: Step–by–Step Guide

Shop parts for a 2021 Husqvarna TE250i Dirt Bike.

The 2021 Husqvarna TE250i is a fuel-injected two-stroke engine that uses a separate gear oil system. Proper oil changes are essential for transmission longevity and peak dirt bike performance. This guide from MotoSport.com provides all the details and expert tips you need, including specific call-outs for the TE250i model year and essential tools.

Tools & Supplies Needed

  • 8 mm socket and ratchet (or stubby wrench)
  • Drain pan
  • Torque wrench
  • Extension bar (optional; for easier access to drain plug)
  • Fresh gear oil (SAE 10W-50 4T or manufacturer-recommended oil like Husqvarna Top Speed 4T 15W-50)
  • Crush washer (recommended; replace if damaged or worn)
  • Shop towels or rags
  • Gloves (optional)

Preparation: Safety First

  • Ensure the bike is parked on a level surface and the engine is off and cool to the touch.
  • Remove any debris around the filler and drain plug areas to prevent contamination.
  • Place the bike on a stand for stability and easier access.

Step–by–Step Oil Change Process

  1. Remove the Skid Plate (if equipped):
    Loosen and remove the two screws beneath the engine guard. Gently drop or swing the skid plate down to expose the drain bolt. This is common for models that come with an under-engine skid; it makes accessing the drain plug much easier .
  2. Locate the Drain Plug:
    The drain bolt is positioned low and towards the right side of the engine. An extension bar may help reach it more easily . Some tutorials recommend an 8 mm socket and ratchet, but a stubby wrench or short extension is also effective for tight spots .
  3. Drain the Old Oil:
    Place a drain pan underneath the engine. Carefully loosen and remove the drain plug, making sure you don’t lose the crush washer. Let the oil fully drain. It's normal for the oil to appear dirty; this is expected after only a few riding hours .
  4. Inspect the Drain Plug and Washer:
    Check the washer for wear or cracks; replace if necessary. Wipe any metallic debris from the magnetic plug if your bike has one. Clean the plug threads.
  5. Reinstall the Drain Plug:
    Thread the drain plug (with a good washer) back into place by hand. Torque to manufacturer specifications—typically 15 Nm (11 ft–lb) for this bike. Always check your owner’s manual for the correct value .
  6. Remove the Filler Bolt:
    The oil fill bolt is marked OIL and is located behind the brake lever return spring. Use your 8 mm socket to remove it. You do not need to remove the spring or disconnect the brake pedal; a stubby wrench or smaller ratchet fits in the tight space .
  7. Refill with Fresh Gear Oil:
    The 2021 Husqvarna TE250i takes 0.80 liters (about 27 ounces) of gear oil. Slowly pour in the recommended oil until it just begins to seep from the oil level check hole. Husqvarna Top Speed 4T 15W-50 is a popular choice, but any oil meeting the manufacturer requirements is acceptable .
  8. Reinstall the Oil Filler Bolt:
    Wipe away any spilled oil and securely tighten the bolt. Inspect for leaks.
  9. Reattach the Skid Plate:
    Secure the skid plate with the original hardware.
  10. Final Checks:
    Wipe down the area. Start the bike briefly and inspect for leaks. Recheck oil level and top up if needed.

2021 Husqvarna TE250i Model Call–Outs & Tips

  • Oil Capacity: Use 0.80L SAE 10W-50 or Husqvarna's specified gear oil .
  • No need to move rear brake or shift lever: Despite what some online guides may say, the filler and drain bolts are accessible with the right tools, avoiding extra time-consuming steps .
  • Crush washer integrity: Always inspect and replace the washer if it appears damaged. A leaking drain bolt can cause major issues down the line .
  • Cleaning magnetic drain plug: If equipped, clean any metallic shavings to monitor gearbox wear .
  • Torque settings: Confirm specifications in your official Husqvarna owner’s manual, as overtightening can cause costly damage to the cases .

Pro Tips for Oil Change Success

  • Warm the bike up for 5 minutes before an oil change. Warm oil drains more fully.
  • Disposal: Always dispose of used oil properly at a recycling facility.
  • Keep track of your oil change intervals—typically every 10–15 engine hours for hard enduro use, or follow your owner's manual.

Conclusion

  • The 2021 Husqvarna TE250i makes gear oil changes simple if you have the right tools and follow a careful process. By using the proper specs and maintaining your oil change intervals, you can keep your dirt bike shifting smoothly and performing its best every ride.

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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.