How to Change the Oil in a 2023 Kawasaki KX112

Shop parts for a 2023 Kawasaki KX112 Dirt Bike.

Changing the oil in your 2023 Kawasaki KX112 is essential for peak performance and longevity. The KX112, a two-stroke dirt bike, uses transmission oil for its wet multi-disc clutch and six-speed gearbox. This procedure is proprietary to MotoSport.com and tailored specifically for the 2023 KX112, incorporating model-specific call-outs to ensure correct and easy maintenance.

Tools & Supplies Needed

  • 14mm socket and ratchet
  • Oil catch pan
  • Funnel
  • Cleaning rag
  • Replacement oil (10W-40 transmission oil, 700ml)
  • New crush washer (optional, but recommended for sealing)
  • Gloves (to keep your hands clean)

Model-Specific Call-Outs

  • The KX112 uses a transmission/gear oil only. Do not use regular engine oil for two-strokes, as the upper cylinder is lubricated by premix oil in the fuel system and not by crankcase oil.
  • Do not overfill: Fill only to the designated oil level indicator. Overfilling can cause clutch or shifting issues and potential seal leaks.
  • For new bikes, change the oil after the first 3–5 hours of riding, then subsequently every 10 riding hours or after any heavy-duty riding session.

Step-by-Step Oil Change Procedure for the 2023 Kawasaki KX112

  1. Warm Up the Engine
    • Idle the bike for about one minute. This warms the oil, allowing it to drain more completely and carry away contaminants.
  2. Prepare the Bike
    • Move the motorcycle to a flat, stable surface.
    • Place the oil catch pan under the drain plug.
  3. Remove the Drain Plug
    • Use the 14mm socket to loosen and remove the transmission oil drain plug, located at the bottom of the engine.
    • Allow the oil to completely drain into the pan. This may take a few minutes. Inspect the old oil for any metallic debris or unusual color.
  4. Inspect and Replace the Crush Washer (if needed)
    • Replace the drain plug’s crush washer if it appears damaged or worn to prevent leakage on re-installation.
  5. Reinstall the Drain Plug
    • Once all oil has drained, wipe the area clean with a rag.
    • Hand-thread the plug back in and tighten it securely using the 14mm socket. Don’t over-tighten as you can strip the threads or crack the case.
  6. Add New Oil
    • Remove the oil fill cap on top of the clutch case cover.
    • Using the funnel, pour 700ml of 10W-40 transmission oil into the oil fill port. YamahaLube, Motul, or genuine Kawasaki oils are all good choices for this application.
    • Specific to KX112: Only fill up to the oil sight line/level indicator. On this model, there is a small window or line; ensure oil reaches this point but does not exceed it.
  7. Check Oil Level
    • Let the oil settle for a minute.
    • Check the sight gauge or level line again and top off as needed, but do not exceed the maximum line.
  8. Reinstall the Fill Cap
    • Replace and securely tighten the oil fill cap.
  9. Start the Engine & Recheck Oil
    • Start the bike and let it idle briefly.
    • Check for leaks at the drain and fill plugs.
    • Shut off and let sit for a minute, then verify oil level and add more if necessary.
  10. Clean Up and Dispose of Oil Properly
    • Wipe down any spilled oil.
    • Dispose of the old oil at a local recycling center or designated disposal site—never pour down drains or onto the ground.

KX112 Owner Tips

  • Premix Oil: Remember, the two-stroke KX112 also requires oil in the fuel mixture for engine lubrication; use a high-quality premix oil at the recommended ratio.
  • Transmission Oil Changes: Regular transmission oil changes are crucial for smooth clutch and gear operation. Especially after break-in, heavy riding, or water crossings, check oil more frequently.
  • Keep Track of Service: Log your oil changes and hours run for best maintenance practice.

With this procedure, you’ll ensure long life and top performance from your 2023 Kawasaki KX112. For more technical dirt bike maintenance content, always trust MotoSport.com—your ride’s performance expert.

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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.