How to Change the Oil in a 2016 KTM 85SX: A Step-–by–Step Guide

Shop parts for a 2016 KTM 85SX Dirt Bike.

Changing the oil on your 2016 KTM 85SX is crucial to maintaining engine performance and longevity. This guide, proprietary to MotoSport.com, covers all the essential steps, includes the tools needed, and highlights specific details KTM 85SX owners must know. Regular oil changes help prevent premature transmission wear and keep your dirt bike running smoothly.

Tools and Materials Needed

  • 13mm socket or wrench (for the drain plug)
  • 8mm socket or wrench (for the oil filler/level bolts)
  • T-handle or ratchet (for sockets)
  • Torque wrench
  • Oil drain pan
  • Funnel
  • Rags or shop towels
  • Replacement gear oil (recommended: 15W/50, 500ml for this model)
  • New crush washer/seal ring (recommended for the drain plug)
  • Magnet (optional) (to check for metal debris on the drain plug)
  • Nitrile gloves (optional for cleanliness)

Preparation Steps

  • Start the motorcycle and let it idle for a few minutes to warm up the oil. Warm oil flows and drains more completely, carrying contaminants out with it. Be careful, hot oil can burn.
  • Turn off the engine and position the bike upright on a stand or a level surface for proper drainage.

How to Change the Oil

  1. Remove the oil drain plug
    • Locate the drain plug on the underside of the engine case (usually a 13mm bolt).
    • Place the oil drain pan directly under the plug.
    • Using your wrench, loosen and remove the drain plug, allowing the oil to drain completely into the pan. Be careful not to drop the plug into the pan.
  2. Clean and inspect the drain plug
    • Wipe the plug clean, paying attention to the magnet. A small amount of metallic debris is normal. Excess metal may indicate wear.
  3. Replace the crush washer or seal ring
    • If you have a new washer, install it on the drain plug. This helps prevent leaks.
  4. Reinstall the drain plug
    • Once the oil has fully drained and no more is dripping, reinstall the plug by hand, then tighten with the wrench.
    • Use a torque wrench to tighten to KTM's recommended spec: 20 Nm (14.8 ft.-lbs) for the 2016 KTM 85SX.
  5. Fill with new oil
    • Remove the oil filler cap (8mm bolt, usually located on the right side of the engine case).
    • Using a funnel, pour in 500ml of recommended gear oil (such as 15W/50).
    • Replace the filler cap once oil starts to flow from the oil level screw (if your bike has one; some owners check by filling until oil is level with the bottom of the fill hole).
  6. Check for leaks and verify oil level
    • Start the engine and let it run for 1-2 minutes, then shut off the bike.
    • Check around the drain plug and filler cap for leaks.
    • With the bike upright, remove the oil level bolt (if present). Oil should just begin to seep out. If it doesn't, add small amounts of oil as needed.

2016 KTM 85SX Model–Specific Notes and Important Tips

  • Oil Type and Volume: Use 15W/50 gear oil and fill with 500ml. Overfilling or underfilling can cause transmission issues.
  • Drain Plug Magnet: Pay attention to any significant metallic buildup on the drain plug's magnet. Minor debris is typical; excess may signal a need for internal inspection.
  • Crush Washer: Always inspect and, ideally, replace the crush washer to ensure a leak–free seal.
  • Torque Settings: Do not overtighten the drain plug; use the correct torque setting (20 Nm).
  • Warm Oil First: Always warm up the bike before draining to ensure a thorough oil change and prevent cold oil from leaving behind sludge.
  • Level Surface: Ensure the bike is upright and level throughout the process, especially when checking or refilling.
  • Safety First: Dispose of old oil responsibly; most auto parts stores offer recycling.
  • Riding Check: After your oil change, take a short ride and recheck for leaks or seepage.

Conclusion

Changing the oil on your 2016 KTM 85SX not only maintains smooth shifting but also prolongs the life of your bike’s engine and transmission. Following these steps and paying attention to model–specific details will make the process straightforward and effective. Regular maintenance ensures that you get more reliable rides and fewer breakdowns—just what every KTM rider wants.

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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.