How to Change the Oil in a 2021 Husqvarna TE300i

Shop parts for a 2021 Husqvarna TE300i Dirt Bike.

Keeping your 2021 Husqvarna TE300i running smoothly means regularly changing its gearbox oil. This step-by-step MotoSport.com proprietary guide will equip you with everything you need, highlight special considerations for this exact model year, and ensure peak performance on your next ride.

Tools and Supplies Needed

  • 8mm Allen wrench – For drain and level screws
  • 13mm socket or wrench – For the drain bolt (verify size before starting as manual updates may occur)
  • Torque wrench – Ensures precise tightening, preventing damage
  • New copper or crush washer – Always replace to avoid leaks
  • Rag or shop towels – For cleanup
  • Oil catch pan
  • Engine oil – 15W/50 full synthetic (0.8L or 0.85 qt for refill)
  • Parts cleaner or brake cleaner – For cleaning magnetic drain plug
  • Gloves
  • Funnel (optional, but helpful)

Step-by-Step Instructions

  1. Warm the Engine (Optional for Drain Efficiency):
    Start your TE300i and let it idle for 3–5 minutes to warm up the oil. This helps suspend contaminants and improves drainage.
  2. Position the Bike:
    Stand the motorcycle upright on a level surface, on a stand if possible. This ensures accurate oil drainage and measurement.
  3. Remove the Oil Filler Cap:
    Locate the filler cap near the right side of the engine and remove it to allow for easier oil flow.
  4. Place Oil Catch Pan:
    Slide your drain pan under the gearbox drain plug on the bottom left side of the engine.
  5. Remove the Gear Oil Drain Plug:
    Use the correct Allen wrench or socket to remove the drain plug. Watch for hot oil.
    • The 2021 TE300i's drain plug incorporates a magnet—carefully clean it with parts cleaner, removing any metallic debris, which is normal from clutch wear.
  6. Inspect Drain Plug and Replace Washer:
    Always install a new crush/copper washer on the drain bolt before reinstalling. This model, with aluminum engine cases, can easily strip threads if over-tightened—refer to specs below.
  7. Let Oil Drain Completely:
    Lean the bike from side to side gently to help remove all old oil. This is particularly important for the TE300i’s split-case design.
  8. Reinstall and Torque Drain Plug:
    Clean the sealing surface, install the drain plug with a new washer, and torque to 20 Nm (14.8 ft-lb) as per the TX/TE manual recommendations for similar models.
  9. Check/Drain the Oil Level Screw:
    Some users prefer to add gear oil until it just begins to weep from the oil level check bolt. You’ll find this bolt on the engine side case. Remove this with an 8mm Allen.
    • Note: Only a small amount should escape; if not, add oil (see below).
  10. Add New Oil:
    Pour 0.8L (800 mL / 0.85 qt) of 15W/50 full synthetic motorcycle oil into the fill opening—a funnel makes this easier.
    • Slowly add oil and watch for drips from the oil level bolt hole (if you opted to remove it). Once oil seeps out, stop.
  11. Reinstall and Torque the Oil Filler and Level Screws:
    Tighten each screw to 8 Nm (5.9 ft-lb) for the oil level screw, and snug, but not over-tightened for the filler cap.
  12. Wipe Down and Recheck for Leaks:
    Clean up any spilled oil, start the engine, and let it idle for 1–2 minutes. Inspect around the drain plug and crankcase for leaks. Shut down and confirm oil level as needed.

Important Model-Specific Call-Outs

  • Oil type and capacity: Reference the manual for 15W/50 full synthetic, with a refill of 0.8L (verified for 2021 TE300i)
  • Drain plug torque: 20 Nm (14.8 ft-lb)—Do not over-tighten in the aluminum case to avoid a costly repair
  • Magnet debris check: It’s normal to find some fine metallic paste on the plug. Large chunks signal internal wear and should be investigated immediately.
  • Washer replacement: Always replace the copper/crush washer with each oil change. A worn washer is a common cause of leaks on these bikes.
  • Oil change interval: Many riders prefer to change gearbox oil every 10 hours or less, especially in harsh conditions or break-in periods.
  • Last tip: Have shop towels ready—gearbox oil can be messy if the drain bolt is removed hastily.

Final Thoughts

Following this guide ensures a mess-free, professional-quality oil change every time for your 2021 Husqvarna TE300i. For genuine parts, oil, crush washers, and all maintenance needs, MotoSport.com has you covered with premium selections and expert advice, helping you ride harder and farther.

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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.