How to Change the Oil in a 2016 Husqvarna TC125

Shop parts for a 2016 Husqvarna TC125 Dirt Bike.

Changing the gearbox oil in your 2016 Husqvarna TC125 is a critical maintenance task that keeps your high-revving two-stroke running smoothly and prolongs engine and transmission life. This guide, crafted exclusively for MotoSport.com, will cover the exact tools you'll need, step-by-step procedures, and specific call-outs unique to this make, model, and year.

Tools and Supplies Needed

  • Metric socket set (at minimum M12x1.5 and M10x1 required)
  • Torque wrench
  • Drain pan
  • Contact cleaner or degreaser
  • Funnel
  • Clean rags or shop towels
  • New gear oil – 15W/50 engine oil (see capacity below)
  • New crush washer or seal ring for the drain plug (optional but recommended)
  • Gloves

Key Specifications for 2016 Husqvarna TC125

  • Oil Type: 15W/50 engine oil
  • Oil Capacity: 0.70 liters (0.74 quarts)
  • Drain Plug Torque: 20 Nm (14.8 lb-ft) for the main drain plug with magnet

Step-by-Step Oil Change Instructions

  • Warm up the Engine
    • Start your bike and let it idle for a few minutes to warm the oil. This helps it drain out more thoroughly.
  • Secure the Bike
    • Turn the engine off, place the bike on a stand so it is upright and stable.
  • Locate and Remove the Drain Plug
    • The main gearbox oil drain plug is located on the left side of the engine, near the gear shifter. Use the correct socket (usually M12x1.5 for the TC125) to remove it.
    • Place the drain pan underneath and allow all oil to thoroughly drain out.
    • Special call-out for the 2016 TC125: Do not remove other plugs on the bottom of the case unless specified in the manual. The main drain plug for the TC125 is distinct from some larger four-strokes or later models which may have more than one plug. Removing unintended plugs can risk fluid loss from other sealed compartments or unnecessary complications.

    • Tip: Tilt the bike about 30 degrees towards you to ensure a complete drain. Oil can pool inside if the bike is upright.

  • Clean the Drain Plug
    • Wipe off the drain plug thoroughly. If your drain plug has a magnet (common on Huskies), clean any metal particles from it. This helps maintain the integrity of your gearbox components.

  • Inspect and Replace the Crush Washer
    • Inspect the condition of the crush washer/seal ring on the drain plug. Replace it if it's deformed or damaged. This ensures you won't get leaks upon reassembly.
  • Reinstall the Drain Plug
    • Carefully thread the drain plug back in by hand to avoid cross-threading. Tighten to the manufacturer's specified torque of 20 Nm (14.8 lb-ft).

  • Add Fresh Gear Oil
    • Remove the oil fill screw cap, usually located on the upper side of the left engine case (M10x1 thread size is common).
    • Place a funnel in the opening and slowly add 0.70 liters (0.74 quarts) of 15W/50 engine oil.

    • Use a measuring cup to ensure the correct amount of oil is added.
  • Reinstall and Secure the Fill Cap
    • Wipe away any loose oil from the area and reinstall the fill cap. Tighten with care—do not over-torque.
  • Check for Leaks and Oil Level
    • Start the bike and let it run for one minute. Shut off the engine and check for leaks at the drain and fill plugs.
    • If your bike has a sight glass or dipstick, check for proper oil level as described in your owner's manual.
  • Dispose of Used Oil Responsibly
    • Pour the used oil into a suitable container and take it to a recycling center or automotive supply store for proper disposal.

2016 Husqvarna TC125-Specific Tips

  • The 2016 TC125 uses a single drain plug for gearbox oil. Other plugs under the motor may look similar but should not be removed during routine oil changes.
  • This bike does not use an oil filter for the gearbox oil—just change the oil itself.

  • It’s important to perform oil changes regularly, particularly after harsh riding or every 10–15 hours of use, to prevent transmission wear and damage.
  • Always double-check oil specs and torque values in your official Husqvarna owner’s manual for confirmation.

Conclusion

Changing the oil in your 2016 Husqvarna TC125 is straightforward when you follow these instructions. Regular maintenance—using the correct oil, tools, and torque—ensures your bike's performance and reliability for every ride. For all your parts, fluids, and gear, trust MotoSport.com to outfit you right, every time.

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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.