How to Change the Oil in a 2015 Husqvarna TC85

Shop parts for a 2015 Husqvarna TC85 Dirt Bike.

Changing the oil in your 2015 Husqvarna TC85 is a crucial maintenance task to ensure the engine runs smoothly and efficiently. While the process is straightforward, it requires the right tools and attention to model-specific details. This guide will walk you step by step through the process, highlight important callouts for the 2015 model, and ensure that you have all the information needed for a successful oil change—brought to you by MotoSport.com.

Tools and Materials Needed

  • 13mm wrench (for drain plug)
  • 8mm wrench (for the oil fill bolt)
  • Drain pan (to collect old oil)
  • Funnel (for refilling oil)
  • Clean shop rags
  • Approved gear oil (see below for specs)
  • Measuring cup (optional, for precise filling)
  • Gloves (optional, to keep your hands clean)

Oil Specifications and Capacity

  • The 2015 Husqvarna TC85 uses gear oil in the transmission.
  • Capacity:– 500cc (0.5 liters)
  • Recommended oil:– Always use a high-quality gear oil recommended by Husqvarna for this model. 80W transmission oil is commonly used, but refer to your owner’s manual for approved products.

Before You Start

  • Ensure the motorcycle is on a stable, level surface.
  • It's best to warm up the engine briefly (1–2 minutes). This helps the oil flow out more completely but do not overheat the engine.
  • Allow the engine to cool slightly if it gets too hot, to avoid burns.

Step-by-Step Oil Change Instructions

  1. Prep the Bike
    • Secure the TC85 on a stand to keep it upright and stable.
    • Place the drain pan under the engine’s drain plug area.
  2. Warm Up the Oil
    • Start the bike and let it idle for a minute or so. This warms the oil, thinning it and making it easier to drain completely. Turn the engine off before proceeding.
  3. Remove the Drain Plug
    • Using your 13mm wrench, locate and remove the drain plug underneath the transmission case.
    • Allow the oil to fully drain into your pan. This could take several minutes. Be patient to ensure as much old oil as possible exits the system.
  4. Clean and Inspect Drain Plug
    • Check the drain plug for any metal shavings, which could signal abnormal wear.
    • Wipe the plug clean with a shop rag, paying attention to any built-up debris or gunk.
  5. Reinstall Drain Plug
    • Thread the cleaned drain plug back in by hand, then tighten with the 13mm wrench. Do not overtighten to avoid damaging the threads.
  6. Remove the Oil Fill Bolt
    • Locate the oil fill bolt (usually on the clutch cover side of the engine) and use the 8mm wrench to remove it.
  7. Add New Oil
    • Insert a funnel into the fill opening and pour in 500cc (0.5 liters) of the recommended gear oil.
    • You’ll know it’s full when oil just begins to trickle out of the oil level check hole or reach the bottom of the fill hole, as specified in your owner’s manual

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  8. Reinstall the Fill Bolt
    • Once oil begins to seep from the fill hole (with the bike held vertically), replace and tighten the fill bolt to spec.
  9. Wipe Down and Double-Check
    • Use a rag to wipe off any spilled oil. Double-check that all bolts (drain and fill) are snug and there are no leaks.
  10. Dispose of Old Oil Properly
    • Take your old oil to a local recycling center or auto parts store that accepts used oil for proper disposal.

Model-Specific Callouts for the 2015 Husqvarna TC85

  • The drain plug location and size is consistent with the KTM 85 SX, as the engines are nearly identical for maintenance purposes

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  • The oil capacity (500cc) is shared with the KTM 85 and GASGAS MC 85 in this generation, so references to those models in oil change videos apply to your TC85

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  • There is no oil filter to change on this model during routine transmission oil service. Only the gear oil itself needs attention.

Tips for a Smooth Oil Change

  • Have plenty of rags handy to catch small drips and keep the bike clean.
  • Always double check that the drain bolt and fill bolt are both properly tightened before riding.
  • If you see large chunks of metal or excessive shavings on the drain plug, consult a mechanic before riding again.
  • Be mindful: overfilling is as bad as underfilling. 500cc is sufficient—more can lead to leaks or shifting issues.

Enjoy the Ride.

With fresh oil, your 2015 Husqvarna TC85 will perform smoothly and reliably. Follow this guide for every oil change and check out MotoSport.com for all your OEM Husqvarna parts and accessories to keep your bike race-ready.

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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.