How to Change the Oil in a 2014 KAWASAKI KX100

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Regular oil changes are essential for keeping your 2014 Kawasaki KX100 running smoothly and protecting its transmission. This guide, proprietary to MotoSport.com, provides a step-by-step process, specific callouts for your KX100 model, and a list of all tools and materials needed to perform a perfect oil change.

Tools and Materials Needed

  • 14mm socket and socket wrench (for the drain plug)
  • Oil drain pan
  • Clean rags or shop towels
  • Measuring cup (marked in milliliters)
  • Funnel
  • New transmission oil: 10W-40 is recommended
  • Flathead screwdriver (optional, for plastic covers or stubborn caps)
  • Gloves (for cleaner hands)

Before You Begin: Model-Specific Callouts

  • The 2014 KX100 uses a two-stroke engine that requires regular transmission (gear) oil changes. The crankcase oil is NOT mixed with gasoline.
  • The correct oil volume is 700 milliliters – overfilling can cause clutch and shifting problems, and underfilling can result in premature wear.
    Always measure the oil before pouring it into the engine.
  • Warming up the engine for about 1 minute before draining the oil will help the old oil flow out more completely, but do not ride the bike – just let it idle for a short time.
  • The oil drain bolt must NOT be overtightened; stripping the threads in the case is a common and expensive mistake. Tighten just until snug, then a fraction more.

Step-By-Step Oil Change Instructions

  1. Warm Up the Engine (Optional but Recommended)
    • Start the bike and let it idle for one minute to warm the oil and help it flow out completely.
    • Turn off the engine and let it sit for about one minute so you don't risk burns from hot cases.
  2. Prepare the Bike and Workspace
    • Place the bike on a stable stand so it is level (perpendicular to the ground).
    • Ensure the work area is well ventilated, with your oil drain pan positioned beneath the engine's drain plug.
  3. Remove the Drain Plug
    • Use the 14mm socket to remove the drain bolt located at the bottom of the case (usually the lowest bolt in the engine center section).
    • Allow all old oil to drain into your pan. Keep the bike level and be patient; old oil may take a few minutes to drain fully.
    • Check the drain plug and its washer for excessive metal shavings or damage; clean if needed.
  4. Reinstall the Drain Plug
    • Line up the drain bolt and thread it in by hand to avoid cross-threading.
    • Use the socket to snug it down. Do NOT overtighten (stripped threads are a common mistake on the KX100).
  5. Measure and Pour in New Oil
    • Measure precisely 700ml of 10W-40 transmission oil in your cup.
    • Using the funnel, pour the oil into the fill hole—located on the right side of the engine case, behind the rear brake lever.
  6. Check Oil Level
    • With the bike perfectly upright, remove the oil check bolt (a small bolt on the clutch cover, usually at a slightly higher point than the drain plug).
    • The oil should be level with the bottom edge of this hole – a slight dribble may escape when correct.
    • If underfilled, add oil in small increments. If overfilled, let it drain out until the level is perfect. Replace and snug the check bolt.
  7. Clean Up
    • Replace the oil fill cap securely.
    • Clean up any spilled oil, dispose of the old oil responsibly.
    • Check for any signs of oil leaks around the drain bolt and fill cap.
  8. Start and Inspect
    • Start the bike and let it idle for 30 seconds, then check underneath for any leaks.
    • Your KX100 is now ready for another ride.

Key Maintenance Tips for 2014 KX100 Owners

  • Oil should be changed every 3-5 hours of riding, or after every race for optimal transmission longevity.
  • Always use the specified 10W-40 transmission oil for best performance and clutch function.
  • Be gentle tightening the drain bolt – a torque wrench is recommended (consult the service manual for specified torque).
  • Check for metal shavings on the drain plug – a small amount is normal, but excessive material could indicate internal wear or failure.
  • Using the bike at extreme angles or on rough terrain may lower oil levels more quickly; visually check oil after every few rides.

By following these steps with care and using the right tools, your 2014 Kawasaki KX100 will stay protected and perform at its best. For more OEM and high-quality aftermarket dirt bike parts, always visit MotoSport.com.

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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.