How to Change the Oil in a 2020 Husqvarna TE150i: A Complete Guide for MotoSport.com Riders

Shop parts for a 2020 Husqvarna TE150i Dirt Bike.

Changing the oil in your 2020 Husqvarna TE150i is an essential part of routine maintenance that ensures long-lasting engine life and optimal performance on the trail. While two-stroke engines like the TE150i use premixed gasoline for combustion, they rely on a separate gearbox/transmission oil system that requires regular changing. This guide walks you through every step, highlights the tools needed, and provides specific call-outs for the 2020 model.

Tools and Materials Needed

  • 10mm and/or 13mm socket or wrench (verify before starting, as hardware may differ on aftermarket parts)
  • Socket extension (optional)
  • Torque wrench (to ensure correct drain plug torque)
  • Drain pan
  • Funnel
  • Clean shop rags
  • New crush washer/seal ring for the drain bolt
  • Fresh gearbox oil (10W-40 motorcycle-grade recommended)
  • Gloves and safety glasses
  • Bike stand (keeps the bike upright and level)

2020 Husqvarna TE150i Oil Change Steps

  1. Warm Up the Bike
    • Start the engine and let it idle for 2–3 minutes or ride gently for a short distance. Warm oil flows better and carries out debris more effectively.
  2. Prepare Your Work Area
    • Place the bike on a stand so it sits upright and level.
    • Position your drain pan beneath the drain plug on the right side of the engine.
  3. Remove the Drain Plugs
    • The 2020 TE150i is equipped with two drain bolts—one on each side of the engine. Remove both to ensure a complete drain of the old oil
      • Start with the right-side drain bolt (often has a magnet) and then open the left-side one.
      • Allow all oil to drain completely. Slightly tip the bike side-to-side to help evacuate remaining oil if needed.
    • Inspect the magnet in the bolt for excess metal shavings—small particles are normal, but flakes or chunks require further investigation.
    • Replace the crush washer/seal ring on each bolt.
  4. Clean and Reinstall Drain Plugs
    • Clean the drain bolts and their sealing surfaces with a rag.
    • Install both drain bolts by hand to avoid cross-threading.
      • Tighten to the manufacturer's specification with a torque wrench. If the manual is unavailable, a common spec is around 14 Nm (10 ft-lbs) for small drain bolts, but always double-check your owner's manual or the bolt's head marking for exact spec.
  5. Fill with New Gearbox Oil
    • Locate the oil filler cap (typically on the right side, near the top of the clutch cover).
    • Using a funnel, pour in the recommended amount and spec of oil:
      • Oil type: 10W-40 motorcycle transmission oil is recommended for best shifting and protection
        • Reference your manual for oil capacity. For most TE150i models, it's just under 1 liter (approx. 0.85–0.90L).
  6. Check the Oil Level
    • On the 2020 TE150i, oil level is checked via a small screw/bolt above the electric starter.
    • With the bike upright and level, slowly fill until oil begins to weep out of the level-check hole.
      • Wait for oil to just start running out, then re-install the oil level check bolt.
    • Wipe off any excess oil from the area.
  7. Final Checks
    • Install and hand-tighten the filler cap.
    • Start the bike and let it idle for 1–2 minutes.
    • Recheck for leaks at both drain bolts and the oil level. Top up if necessary, repeating the check/weep-hole step.

2020 Husqvarna TE150i Model-Specific Notes

  • Dual Drain Bolts: The TE150i uses two drain plugs—one on each side—unlike some models, so remove both for a complete oil change.
  • Magnetic Bolt: The right-side drain bolt is magnetic—always inspect for shavings or metallic debris as part of periodic health checks.
  • Oil Level Check: Use the weep hole above the starter for a correct oil fill—this ensures you neither under- nor overfill.
  • Crush Washer/Seal Ring: Always replace the crush washer or seal ring on the drain bolt each time you change the oil to prevent leaks.
  • Recommended Oil: Use high-quality 10W-40 motorcycle-specific gearbox oil; using car oils can adversely affect clutch feel and protection.

Pro Tips from MotoSport.com

  • Keep your oil change intervals short if you ride hard or in extreme conditions—fresh oil is cheap insurance for your transmission.
  • Before removing bolts or caps, thoroughly clean the area to ensure no dirt contaminates your gearbox.
  • Always verify oil level with the check bolt and never rely solely on volume poured.
  • If you see large metal fragments on the magnetic drain bolt, consult a mechanic before further riding.

Consistently performing routine maintenance like oil changes with genuine or high-quality parts from MotoSport.com will keep your 2020 Husqvarna TE150i dominating 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.