How to Change the Oil in a 2018 Husqvarna TE250i – Step-by-Step Guide

Shop parts for a 2018 Husqvarna TE250i Dirt Bike.

MotoSport.com brings you this comprehensive and proprietary how-to guide for changing the oil in your 2018 Husqvarna TE250i. Maintaining fresh gear oil is essential for optimal clutch performance and engine longevity. This guide covers all required tools, detailed steps, and specific details relevant to the 2018 TE250i model.

Tools & Materials Needed

  • Socket wrench with extension (commonly a 13mm or 1/2-inch, confirm by inspecting your drain bolt)
  • Drain pan for old oil
  • Funnel (preferably a narrow, flexible type for motorcycles)
  • New gear oil (0.8L or 0.85 quarts of high-quality 2-stroke gear oil compatible with Husqvarna dirt bikes)
  • New crush washer (optional but recommended)
  • Torque wrench (for reinstalling the drain bolt to specification)
  • Clean rags for wiping up spills
  • Contact cleaner (optional, for cleaning surfaces)
  • Allen keys or Torx tools if your skid plate requires removal
  • Gloves (optional, for cleaner hands)

Preparation

  • Warm up the engine for 2-3 minutes to allow the oil to thin and drain more thoroughly. Shut the bike off and place it on a secure stand.
  • Ensure the bike is level and the engine is cool enough to touch before proceeding.

Step 1: Remove the Skid Plate Guard (If Fitted)

  • Using the necessary Allen key or tool, remove the bolts holding the skid plate or under-engine guard to access the drain bolt. Let the guard swing out of the way or lift off entirely, depending on the design.

Step 2: Locate and Remove the Drain Bolt

  • Position the drain pan directly beneath the oil drain bolt.
  • Use the socket wrench and extension to loosen and remove the drain bolt. A washer may come off with the bolt — take care not to lose it in the oil pan.
  • Allow the oil to drain fully; this may take several minutes. Check for debris on the magnetic tip of the drain bolt and clean thoroughly with a rag.

Step 3: Reinstall the Drain Bolt

  • Inspect the crush washer and replace if deformed or damaged.
  • Refit the drain bolt with washer by hand first, then use the torque wrench to tighten it to manufacturer specification (usually around 12-15 Nm, but verify in your owners manual).

Step 4: Add Fresh Gear Oil

  • Remove the oil fill cap, typically located on the right side of the engine case.
  • Insert a funnel and pour in 0.8 liters (800 ml) of fresh, high-quality gear oil suited for 2-stroke transmissions.
  • On the 2018 TE250i, there is a sight/check bolt labeled “oil” near the engine case. Remove the check bolt briefly:
    • When oil starts to seep out of this hole, the case is now properly filled.
    • Reinstall and tighten the check bolt securely.

Step 5: Finish Up

  • Replace and tighten the oil fill cap.
  • Reinstall the skid plate or guard. Tighten its fasteners evenly.
  • Use a clean rag to thoroughly clean any oil residue from the case and surrounds.

Step 6: Final Checks

  • Start the engine and let it idle for one minute, then shut it off and check for leaks at the drain bolt, check bolt, and fill cap.
  • Wipe any drips or spillage. Double-check fastener tightness.
  • Ride for a few minutes, then reassess for signs of leaks before your next big outing.

Model-Specific Call-Outs for the 2018 Husqvarna TE250i

  • The TE250i uses a gear oil separate from the 2T injection system; never attempt to pour oil into the injection system for this purpose.
  • Change interval: Husqvarna suggests changing the gear oil every 15 hours of ride time, or sooner under racing or muddy conditions.
  • Always use the check bolt for accurate oil fill level – overfilling can cause clutch drag, while underfilling can lead to accelerated engine wear.
  • The location and removal of the skid plate/guard may require Torx bits depending on dealer-installed hardware.
  • Be aware that the magnetic drain plug will attract metal shavings; a “fuzzy” appearance is normal, but excess metal can indicate a developing problem.

Disposal

  • Transfer the old oil into a sealable container and recycle it according to your local hazardous waste regulations.

Summary

  • Frequent gear oil changes are inexpensive insurance for your 2018 Husqvarna TE250i’s reliability and longevity. Use only fresh, high-quality oil and always inspect your drain plug for metal debris.
  • For genuine parts and top-grade motorcycle oils, shop with confidence at MotoSport.com.

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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.