How to Change the Oil in a 2013 Kawasaki KLX140R 17/14

Shop parts for a 2013 Kawasaki KLX140R Dirt Bike.

If you ride a 2013 Kawasaki KLX140R 17/14, changing the oil periodically ensures your dirt bike’s performance and longevity. This step-by-step guide is proprietary to MotoSport.com and will walk you through the process, call out important tips specific to your model, and list every essential tool for the job.

Tools and Supplies You’ll Need

  • Ratchet and extension
  • 8mm socket (for oil filter cover)
  • 17mm socket (for drain bolt)
  • Torque wrench
  • Drain pan
  • Clean rags or paper towels
  • New oil filter
  • Crush washer (optional, replace if worn)
  • 10W-40 motorcycle oil (at least 2 quarts; the KLX140R holds approx. 1.22 quarts for an oil change with a new filter)
  • Gloves (optional, for cleanliness)

Step-by-Step Oil Change Instructions

  1. Warm the Engine:
    Start your KLX140R and let it idle for about a minute. Warming the oil ensures it drains more easily and thoroughly.
    Tip: Be careful, as the exhaust and engine case will soon be hot.
  2. Remove Dipstick:
    Turn off the engine. Unscrew and remove the dipstick from the right side of the engine. This allows air into the crankcase and helps the oil flow out faster when draining.
  3. Drain the Engine Oil:
    Place the drain pan directly under the 17mm drain bolt located on the lower left side of the engine case.
    Using your 17mm socket and ratchet, carefully remove the drain bolt and crush washer. Allow the oil to completely drain into your pan.
    Tip: Inspect the crush washer; replace if damaged to ensure a proper seal.
  4. Remove the Oil Filter:
    Locate the small cover on the side of the engine (usually the right side) held by a few 8mm bolts.
    Use the 8mm socket to remove these bolts (be cautious, they’re shorter and easy to misplace).
    Gently pull off the cover; a spring may be present behind it, so pay attention to how components are arranged for reinstallation.
    Take out the used oil filter.
    Tip: Clean any residual oil and debris from the cover and filter cavity with a clean rag.
  5. Install the New Oil Filter:
    Insert the new oil filter, making sure it’s oriented the same way as the old one (spring-side out on the KLX140R).
    Replace the cover and bolts, tightening them evenly and just snug; do not overtighten as the threads are easily damaged.
  6. Reinstall the Drain Bolt:
    Once the oil has fully drained, reinstall the 17mm drain bolt and crush washer.
    Use a torque wrench to tighten the bolt to 22 ft-lb (29 Nm) as recommended by Kawasaki.
  7. Refill With Fresh Oil:
    Place a funnel into the oil fill hole (where the dipstick goes).
    Pour in approximately 1.22 quarts (1.15 liters) of 10W-40 motorcycle oil.
    Note: The KLX140R takes a little more oil if you replaced the filter, so pour slowly and check the level often.
    Reinstall the dipstick, but do not screw it in; just insert it to check the level.
    Top off as necessary until the oil is at the appropriate mark on the dipstick.
  8. Check for Leaks and Final Level:
    Start the engine, let it idle for 30 seconds, then shut it off. Wait a few minutes, then recheck the oil level.
    Add a little oil if needed.
    Look for leaks at the drain bolt and oil filter cover.
  9. Proper Cleanup:
    Wipe down any spilled oil. Dispose of used oil and filter at your nearest motorcycle shop or recycling center.

2013 Kawasaki KLX140R-Specific Tips

  • Oil capacity for the 2013 KLX140R with a new filter is about 1.22 quarts (1.15 liters). Overfilling can cause excess crankcase pressure, so always measure with the dipstick unscrewed and fully inserted.
  • The oil filter orientation is important: spring faces outward. If installed backwards, oil flow can be restricted and engine damage may result.
  • Replace the crush washer on the drain bolt every oil change for best leak prevention.
  • This model lacks an oil screen, so be sure to change the filter at every oil change and inspect the old filter for signs of metal debris or excessive contamination.
  • Only use 10W-40 oil specifically formulated for motorcycle wet clutches; automotive oil can cause clutch slippage and shifting problems.

Why Regular Oil Changes Matter

  • Clean oil lubricates internal components and extends the life of your KLX140R’s engine.
  • Dirty oil accelerates wear and can cause premature engine failure.
  • Changing your own oil also saves time and money while allowing you to learn more about your bike.

Refer to your owner’s manual for details if you are not sure about any step. If you have persistent troubles or notice unusual residue in your oil, consult a professional mechanic. Always use caution around hot engine components, and keep your work area safe and clean.

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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.