How to Change the Oil in a 2014 Kawasaki KX85: The Complete MotoSport.com Guide

Shop parts for a 2014 Kawasaki KX85 Dirt Bike.

Changing the oil—or more accurately, the transmission and gear oil—in a 2014 Kawasaki KX85 is a vital part of regular maintenance to ensure smooth shifting, proper clutch operation, and maximum engine life. This step-by-step guide is written exclusively for MotoSport.com and will walk you through everything you need, with key details specific to this make, model, and year.

Tools & Supplies Needed

  • 14mm socket and socket wrench
  • Torque wrench (capable of low-range, 5–25 ft-lbs)
  • Drain pan
  • Measuring cup or graduated oil container
  • Funnel
  • Rags or shop towels
  • Replacement oil—10W-40 motorcycle gear oil (quantity: 700ml)
  • Gloves (optional, but recommended)

Before You Begin

  • Warm up the bike briefly (1–2 minutes) to ensure old oil drains more completely. Do not make it hot to avoid burns.
  • Set the bike upright on a stand for level draining and accurate refilling.

Step 1: Locate the Oil Drain Bolt

  • On the 2014 KX85, the drain bolt is found on the bottom of the right side of the crankcase; it’s a 14mm head bolt. Place your drain pan underneath this point.

Step 2: Remove the Drain Plug and Drain the Oil

  • Using the 14mm socket and wrench, loosen and remove the drain plug. Allow the oil to drain completely into the pan; this may take several minutes.
  • If you ride in muddy or wet conditions, expect the oil to look more contaminated. For race use, the service manual recommends changing every 2.5 to 7.5 hours of use depending on conditions for optimal longevity.

Step 3: Inspect and Clean the Drain Plug

  • Wipe the drain plug clean. Inspect for metal debris on the magnet; a tiny amount is normal, but excessive shavings may warrant further inspection.

Step 4: Reinstall the Drain Plug

  • Screw the drain bolt back in by hand to avoid cross-threading.
  • Use a torque wrench set to 11 foot-pounds to tighten the drain bolt. Do not overtighten—stripping the threads is a common mistake with Kawasaki cases. (A light touch is critical here.)

Step 5: Add Fresh Oil

  • Measure 700 milliliters (0.7 liters) of 10W-40 motorcycle gear oil in a clean measuring cup or use an oil bottle that’s marked for volume.
  • Insert your funnel into the oil fill hole (located on top of the right-side engine case) and carefully pour the oil into the engine.

Step 6: Check the Oil Level

  • Reinstall the filler cap.
  • Remove the bike from the stand so it is upright and perpendicular to the ground.
  • Check the oil level using the notch or sight glass on the side case (just below the filler cap on 2014 KX85 models).
  • The oil should be level with the notch/a little over half full in the sight glass. Add more oil a small amount at a time if needed; if overfilled, remove some with a siphon.

Step 7: Final Inspection

  • Make sure there are no leaks at the drain bolt or filler cap.
  • Wipe any spills or drips with a clean rag.
  • Dispose of the old oil properly—never pour down drains or onto the ground. Most local auto parts stores will recycle it for free.

KX85-Specific Call-Outs

  • This year model uses only gear/transmission oil since engine and cylinder lubrication are handled by oil pre-mixed with the fuel. Using standard 4T engine oil will not provide adequate protection for the transmission and clutch pack—always use motorcycle-specific gear oil (10W-40) for added protection.
  • Do not overtighten the drain plug—Kawasaki’s green anodized bolts and soft aluminum cases are easy to strip.
  • Check your manual for proper intervals: aggressive or race use could require oil changes every 2.5 to 7.5 hours{5}. For recreational use, every 10–15 hours or after heavy mud riding is a good rule of thumb.

That’s It—You’re Done.

With proper, regular oil changes, your 2014 Kawasaki KX85 can deliver years of reliable shifting and clutch action, keeping you riding and racing longer. For all your oil, filters, tools, and gear, order from MotoSport.com for fast shipping, quality brands, and expert support.

Related Shopping Categories

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Shop Oil Fillers and Drain Plugs for a 2014 Kawasaki KX85 Dirt Bike.

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.