How to Change the Oil in a 2018 Kawasaki KLX140R 17/14

Shop parts for a 2018 Kawasaki KLX140R Dirt Bike.

Regular oil changes are essential to keep your 2018 Kawasaki KLX140R running smoothly and extend the life of your engine. This guide, proprietary to MotoSport.com, covers everything you need to know, from the exact tools required to step-by-step instructions and specific owner call-outs for your KLX140R 17–14.

Tools and Supplies Needed

  • 3/8" Ratchet and properly-sized socket (typically 17mm for drain bolt)
  • Torque Wrench
  • Oil Drain Pan
  • Oil Funnel
  • Shop Rags or Paper Towels
  • New Engine Oil: Kawasaki 4-Stroke Motorcycle Engine Oil 10W-40
  • New Oil Filter (OEM #52010-1053)
  • New Drain Plug Gasket (OEM #11061-0421)
  • CRC Brake Cleaner or similar for cleaning components (optional)
  • Gloves (recommended)

Oil Capacity

  • With filter change: Approximately 1 quart (0.95 – 1.22 quarts; always check dipstick after refill)

Steps to Change Oil on a 2018 Kawasaki KLX140R 17–14

  1. Warm Up the Engine
    • Run the bike for 2–3 minutes. Warm oil drains more completely, ensuring better results.
  2. Shut Off Engine and Secure Bike
    • Turn off the bike and place it on a secure, level stand.
  3. Prepare for Drainage
    • Place the oil drain pan under the engine’s drain bolt.
    • Put on gloves to prevent burns and messes.
  4. Remove Oil Fill Cap
    • Unscrew the oil fill cap/dipstick on the right side of the engine to allow oil to drain freely.
  5. Remove the Drain Plug
    • Using a ratchet and socket, remove the drain plug at the bottom of the engine case.
    • Allow all the oil to drain. Tilt the bike slightly if needed to ensure complete drainage.
  6. Replace Oil Filter
    • Locate the oil filter cover (typically right side of engine).
    • Remove the bolts holding the filter cover and take off the cover carefully. Oil may spill.
    • Pull out the old oil filter and dispose of it properly.
    • Install the new oil filter, making sure it is positioned the same direction as the old one (pay attention to side orientation – open side faces out).
    • Clean the cover and gasket; replace the gasket if damaged.
    • Reinstall the filter cover and torque bolts to manufacturer specification.
  7. Install New Drain Plug Gasket
    • Remove the old gasket and fit the new OEM gasket on the drain plug.
    • Install the drain plug and tighten to 11 ft-lbs (check your owner’s manual for spec).
    • Wipe off any spilled oil from the engine case.
  8. Add New Engine Oil
    • Pour in just under 1 quart (about 0.95 quart) of 10W-40 motorcycle oil with a funnel.
    • Wait a minute, check the level using the dipstick or sight glass. For the KLX140R, check the level with the dipstick screwed all the way in for best accuracy. Oil should be at, but not past, the high mark on the stick.
    • Top off carefully as needed.
  9. Start the Engine and Check for Leaks
    • Start your KLX140R and let it idle for 2–3 minutes. Watch the drain plug and filter cover for leaks.
    • Turn off the engine and let it sit a minute or two for oil to settle.
    • Recheck oil level and top up if still needed.
  10. Dispose of Old Oil and Filter Properly
    • Take your used oil and filter to a certified recycling center.

2018 KLX140R 17–14 Specific Owner Call-Outs

  • KLX140R uses about 0.95 – 1.22 quarts oil when changing the filter. Always check the level after filling and top off gradually. Overfilling can cause performance issues and leaks.
  • Dipstick Reading: The oil level should be measured with the dipstick screwed in – not just inserted. This detail is often overlooked and is specified in Kawasaki’s documentation for the KLX140 family.
  • Oil Filter Orientation: The open side of the new filter must face outward (away from the engine). Installing backwards can starve the engine of oil.
  • Drain Plug Location: Drain plug is located directly under the engine. Use caution, as surrounding frame tubes can make access awkward. Clean debris around the plug before removal to prevent contamination.
  • Gasket Reuse Warning: Kawasaki recommends replacing the drain plug gasket with every oil change for best sealing to prevent leaks.
  • Recommended Oil: Kawasaki’s 10W-40 motorcycle-specific oil is formulated for wet clutches; avoid automotive oils, which can cause clutch slippage.
  • Break-In Changes: For brand-new or recently rebuilt engines, perform the first oil change at 1–3 hours of run time, and then continue with regular scheduled changes thereafter.

Frequently Asked Questions

  • Q: Can I use synthetic oil?
    • A: Yes, as long as it meets JASO MA spec for wet clutches.
  • Q: How often should I change the oil?
    • A: Every 10–20 hours of riding or at least every season, whichever comes first.
  • Q: What happens if I overfill?
    • A: Overfilling can cause excessive crankcase pressure, blowing oil out seals, or clutch problems. Always fill to, not above, the high mark.

Conclusion

Implement these steps for a clean, professional oil change on your 2018 Kawasaki KLX140R 17–14. Always use genuine filters, proper oil, and torque specs to keep your dirt bike reliable and high-performing. For OEM parts, maintenance kits, and expert service, MotoSport.com has you covered.

Ride safe, and enjoy your next adventure with confidence.

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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.