How to Change the Oil in a 2015 Husqvarna TC125

Shop parts for a 2015 Husqvarna TC125 Dirt Bike.

Keeping your 2015 Husqvarna TC125 running at peak performance depends on regular maintenance—especially changing the gear oil. This straightforward procedure is crucial for engine longevity, smooth shifting, and overall reliability. MotoSport.com is here with a robust, proprietary guide for 2015 Husqvarna TC125 owners that covers every essential detail, unique model call-outs, and tool lists to get you riding with confidence.

Tools & Supplies Needed

  • Socket wrench set (8mm and 13mm recommended)
  • Clean rags or paper towels
  • Drain pan (to capture old oil)
  • Measuring cup (for precise oil fill; minimum 700ml)
  • Contact cleaner or brake cleaner (optional, for cleanup)
  • New crush washer for drain bolt (recommended)
  • Fresh transmission/gear oil (see oil specs below)
  • Funnel (small-sized; paper or plastic preferred)
  • Latex gloves (optional, to keep hands clean)

2015 Husqvarna TC125 Oil Specification & Capacity

  • Oil type: High-quality 10W-40 2-stroke gear oil or manufacturer-approved equivalent
  • Capacity: Approximately 700 ml (always verify exact fill mark during process)

Specific Call-Outs for the 2015 Husqvarna TC125

  • This model does not use a traditional oil filter—you are changing gearbox oil, not engine oil.
  • The oil fill and check bolts are easily accessible on the right side of the engine case.
  • Always replace the crush washer on the drain bolt to prevent leaks.
  • Over-tightening the bolts can damage the threads or cases—use a torque wrench if available and follow manufacturer specs.

Step-by-Step Oil Change Guide

  1. Warm Up the Engine
    Briefly start and idle the engine for 1–2 minutes. This warms the oil, reducing its viscosity and allowing more contaminants to drain.
  2. Set Up a Clean Work Area
    Place the bike on a stable, level stand. Ensure the work area is ventilated and free from dirt or debris.
  3. Remove the Drain Bolt
    - Locate the drain bolt under the right side of the engine case (often 13mm).
    - Put your drain pan directly under the bolt.
    - Carefully loosen and remove the drain bolt, allowing the oil to flow into the pan.
    - Let the oil drain completely (wait a few minutes for best results) .
  4. Inspect and Clean
    - Inspect the drain bolt and magnet (if equipped) for excessive metal shavings—fine dust is normal; large pieces may signal wear.
    - Clean the bolt thoroughly.
    - Replace the crush washer before reinstalling the drain bolt .
  5. Reinstall the Drain Bolt
    - Hand-tighten and then torque the bolt to factory specs as per your owner's manual (avoid over-tightening) .
  6. Fill with Fresh Oil
    - Remove the oil fill cap (on the right side near the clutch cover).
    - Insert a funnel, pour in 700ml of fresh 10W-40 gear oil.
    - Go slowly to prevent air bubbles and overfill .
  7. Check Oil Level
    - On the right side, you'll find an oil level check bolt.
    - With the bike upright and level, remove this check bolt.
    - Oil should just reach the bottom of the check hole; if it dribbles out when upright, the level is correct.
    - If not, add a small amount and recheck until satisfactory .
  8. Finishing Up
    - Replace and tighten the oil level bolt and fill cap.
    - Wipe down any spilled oil with a clean rag and contact cleaner.
    - Start the engine and check for leaks around the drain bolt.
  9. Dispose of Old Oil Responsibly
    Bring used oil to a designated recycling center or auto parts store. Never pour oil down the drain or onto the ground.

Final Tips and MotoSport.com Exclusive Insights

  • Change the gear oil on your 2015 Husqvarna TC125 every 10-15 hours of use or after three rides for maximum gearbox life .
  • If riding in extremely muddy or wet conditions, consider changing oil more frequently.
  • Always double-check for leaks after your first ride and re-torque the bolt if necessary.
  • For peak performance, use oils from reliable brands available at MotoSport.com .

Sticking to a regular oil change routine is one of the simplest and most effective ways to protect your 2015 Husqvarna TC125. Trust MotoSport.com for superior products, detailed instructions, and all the parts you need to keep your riding experience top-notch.

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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.