How to Change the Oil in a 2025 Husqvarna TE150: A MotoSport.com Exclusive Guide

Shop parts for a 2025 Husqvarna TE150 Dirt Bike.

Regular oil changes are key to keeping your 2025 Husqvarna TE150 running strong on the trails. Follow this dedicated, step-by-step MotoSport.com guide to change the transmission (gearbox) oil, avoid common mistakes, and ensure peak performance from your dirt bike.

Tools and Supplies Required

  • 10mm or 13mm socket/wrench (for drain/check bolts, depending on bolt size)
  • Torque wrench (strongly recommended for reinstalling bolts to spec)
  • Drain pan/container (suitable for catching used oil)
  • Oil funnel
  • Clean shop rags or paper towels
  • New crush washer or seal ring for drain plug
  • High-quality 10w40 gear oil (refer to your manual for the exact specification and amount; generally about 0.85–1.27 quarts depending on model year)
  • Parts cleaner or mild degreaser (optional, for cleaning drain bolt and magnet)
  • Gloves (keep hands clean and safe from hot fluids)
  • Bike stand (to keep the bike upright and level)

Preparation

  • Start with a warm engine; run the bike for a few minutes to thin the oil so it drains better.
  • Turn the ignition off and secure the bike upright and level on a stand.

Oil Change Steps

  1. Locate the Drain Bolts
    • The 2025 Husqvarna TE150 features two oil drain bolts at the bottom of the engine, each typically with a magnetic tip.
    • There is an oil fill cap on the right side and a check-level screw (the small screw above the starter)
  2. Remove Both Drain Bolts
    • Use the socket to carefully loosen and remove each drain bolt.
    • Let all the oil drain into the pan. Allow several minutes for a complete drain.
    • Inspect bolts for metal shavings clinging to the magnet – clean thoroughly.
    • Replace the crush washers/seal rings if they are worn or damaged.
  3. Reinstall Drain Bolts
    • After oil has fully drained, clean the seating surfaces.
    • Reinstall both bolts (with new washers if possible) and torque to manufacturer specification. Do not overtighten as this can strip threads.
  4. Refill with New Oil
    • Remove the oil fill cap. Using a funnel, pour in fresh 10w40 gear oil as specified in your owner's manual.
    • Consult the manual for exact volume – for reference, expect about 0.85–1.27 quarts (0.8–1.2 liters), but check your model year.
  5. Check the Oil Level
    • With the bike level, remove the small check-level screw above the starter.
    • Slowly fill until a small trickle of oil seeps out the check hole – then stop filling.
    • Once the correct level is reached, reinstall the check-level screw and the filler cap.
  6. Clean Up and Final Check
    • Wipe away any spilled oil, double check all fasteners for proper tightness.
    • Start the engine and let it idle for 1–2 minutes.
    • Check again for any leaks at drain and fill points.

2025 Model Specific Call-Outs

  • Dual Drain Bolts: Both must be removed for complete draining. This is a critical step many miss, especially if you own or have owned previous two-stroke models with a single drain point.
  • Oil Check Screw: Always fill oil until it flows from the check screw on a level surface – don't overfill or underfill.
  • Use the Correct Oil: High-performance synthetic 10w40 gear oil is recommended. Do not use standard engine oil for the transmission/gearbox – it will affect clutch engagement and longevity.
  • Engine Cleaning: Before removing drain bolts, clean the area around them to prevent debris from falling into the engine.
  • Magnet Inspection: The magnetic drain bolts should be inspected every oil change for metal debris which could signal larger bearing or gear issues.

Pro Tips

  • Change your oil every 10–15 hours of riding or after every few intense rides for maximum gearbox protection.
  • Keep a record of each oil change, the amount added, and any unusual findings (metal, smell, color).
  • If you feel unsure about torque specs or procedures, consult your dealer or MotoSport.com service resources for Husqvarna TE150 models.

Conclusion

Following these steps will ensure your 2025 Husqvarna TE150 continues to provide reliable, smooth performance on every ride. For OEM parts, the best quality gear oils, and top tools, trust in MotoSport.com for all your dirt bike maintenance needs.

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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.