How to Change the Oil in a 2014 Husqvarna TC85 BW

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Keeping your 2014 Husqvarna TC85 Big Wheel (TC85 BW) in peak running condition means regular oil changes. Whether you’re racing or riding trails, fresh oil keeps your bike’s gearbox lubricated and protects vital components from wear. Don’t overlook this critical maintenance. Below, MotoSport.com lays out a comprehensive guide tailored specifically for the 2014 TC85 BW.

Tools and Supplies Needed

  • Drain pan (to catch old oil)
  • Box-end wrench or socket set (check your manual for the correct size, usually 13mm or 17mm for the drain bolt)
  • New gear oil (consult your owner’s manual for the Husqvarna-recommended type and quantity, typically gear oil 10W-40 or as specified)
  • Measuring cup (for accurate oil refilling)
  • Clean rags or paper towels (cleanup and wiping excess oil)
  • Funnel (to help pour oil without spilling)
  • Replacement crush washer for the drain bolt (recommended)
  • Gloves (optional but helpful to keep your hands clean)

Preparation

  • Warm up the engine for 2–3 minutes. This helps the oil flow better and drain more thoroughly.
  • Place the bike on a center stand or secure triangle stand, making sure it’s upright and steady.
  • Ensure you’re working in a well-ventilated area and have your tools within reach.

Step-by-Step: Oil Change Process

  1. Locate the Drain Bolt and Oil Filler Plug
    • The drain bolt is near the bottom of the engine case, while the filler plug is typically on the clutch cover or side of the case. The location may be stamped as “oil” or “gear oil.”
    • For the 2014 Husqvarna TC85 BW, reference the manual or visually identify these parts. Typically, the level screw is on the side and the filler up top. Use care: cases look similar but bolts have specific functions.
  2. Drain the Old Oil
    • Place your drain pan directly under the drain bolt.
    • Carefully remove the drain bolt (lefty loosey) with your wrench or socket. Watch out for hot oil.
    • Allow all the oil to drain. Tilting the bike gently side to side can help remove residual oil.
    • Check the drain bolt for debris or metal shavings—excessive shavings could signal engine wear. Clean the bolt thoroughly.
    • If your bike uses a crush washer, replace it to prevent leaks.
  3. Reinstall the Drain Bolt
    • Once oil has stopped dripping, wipe the area clean.
    • Reinstall the drain bolt with the new crush washer (if applicable).
    • Tighten securely (do not over-tighten to avoid stripping threads).
  4. Fill with New Oil
    • Remove the oil filler plug. Insert a clean funnel into the filler hole.
    • Pour in the manufacturer-recommended gearbox/engine oil. For many 85cc two-stroke MX bikes, typical quantity is –500–700 ml, but always verify with your owner’s manual. For the TC85 BW, fill only to the bottom of the oil level hole or as specified in your manual.
      Tip: Do not overfill. Overfilling can cause leaks or foaming oil.
      Reference from the manual:
      "Remove filler plug – Add gear oil up to bottom of the hole of the gear oil level screw."
    • Replace the filler plug and hand-tighten securely.
  5. Check the Oil Level
    • With the bike level, remove the oil level check screw (if equipped). Oil should just start to seep out when at the correct level.
    • If necessary, add oil in small increments and recheck.
  6. Final Steps
    • Wipe up any spills or drips.
    • Start the engine and let it run for two minutes.
    • Shut the engine off and check for leaks around the drain bolt and filler plug.
    • Properly dispose of old oil according to your local regulations—never pour it down drains or on the ground.

Specific Call-Outs for 2014 Husqvarna TC85 BW Owners

  • The TC85 BW uses a two-stroke engine. The oil you change is gearbox oil, not engine oil (two-strokes don’t use engine oil in the traditional sense). Don’t confuse gearbox oil with your pre-mix engine oil.
  • Husqvarna recommends using a premium-quality 10W-40 or similar gear oil designed for two-stroke motocross bikes. Double check your manual for exact type and quantity.
  • If you ride hard or in muddy conditions, consider changing oil more frequently than the manufacturer’s recommendation.
  • Always use new gaskets or crush washers for the drain plug to avoid leaks.
  • If you encounter milky or frothy oil, water may be entering your gearbox—investigate seals and gaskets as this can lead to major issues.

Conclusion

Regular oil changes are simple, affordable, and provide a massive benefit to your Husqvarna TC85 BW’s performance and lifespan. Equip yourself with the right tools and oil, follow the steps above, and you’ll keep your ride ready for anything the track or trail throws your way.

If you need manufacturer-recommended oil, tools, or replacement parts, MotoSport.com is your source for everything dirt bike maintenance.

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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.