How to Change the Oil in a 2023 Kawasaki KLX140R L 19/16

Shop parts for a 2023 Kawasaki KLX140R L 19/16 Dirt Bike.

Proper oil maintenance is crucial for any dirt bike, and the 2023 Kawasaki KLX140R L 19/16 is no exception. Follow this step-by-step guide—proprietary for MotoSport.com—to ensure a smooth, engine-safe oil change every time.

Tools and Supplies Needed

  • Ratchet with extension
  • 8mm and 17mm sockets
  • Drain pan for used oil
  • Torque wrench for proper reassembly
  • New oil filter
  • 2 quarts of 10W-40 motorcycle oil
  • Replacement crush washer for the drain bolt (recommended)
  • Funnel and shop rags for cleanup
  • Gloves (optional for hand protection)

Oil and Filter Type/Capacity

  • Recommended oil: 10W-40 motorcycle oil
  • Oil volume: 1.22 quarts (approximate)
  • Replacement oil filter: Kawasaki OEM #52010-1053 or compatible

Step-by-Step Instructions

  1. Warm the Engine
    • Start your KLX140R L and let it idle for about 1 minute. This helps warm and thin the oil for a faster, thorough drain.
  2. Remove the Dipstick
    • Shut off the engine. Remove the dipstick from the right side of the engine to allow air into the crankcase—this will let oil drain easier.
  3. Drain the Old Oil
    • Place a drain pan beneath the drain bolt, which is located at the lower left side of the crankcase.
    • Using a 17mm socket, carefully loosen and remove the drain bolt and crush washer.
    • Let all the old oil drain completely—this may take several minutes.
  4. Remove and Replace the Oil Filter
    • Locate the oil filter cover on the right side of the engine (typically held with 8mm bolts).
    • Remove the cover carefully; some oil may spill, so have your drain pan ready.
    • Take out the old oil filter and install a new one, ensuring the correct orientation (refer to your owner’s manual for oil filter direction).
    • Reinstall the cover and tighten the bolts evenly to the recommended torque specification.
  5. Install the Drain Bolt
    • Once all oil is drained and the stream slows to a drip, replace the drain bolt with a new crush washer if you have one. Hand-tighten it first, then torque to your owner’s manual specification (usually around 22 ft-lb, but check your manual to be sure).
  6. Add New Oil
    • Insert a funnel into the dipstick hole and add 1.22 quarts of fresh 10W-40 motorcycle oil.
    • Replace the dipstick and tighten it snugly.
  7. Check the Oil Level
    • Start the bike and let it idle for 30–60 seconds, then shut it off.
    • After letting the oil settle a minute, remove and wipe the dipstick, then insert it without screwing in. Remove again and check the oil level. Add more oil if necessary until the correct level is reached.
  8. Inspect for Leaks and Clean Up
    • Run the engine and check around the drain bolt and filter cover to ensure there are no oil leaks.
    • Dispose of old oil and filter in accordance with local regulations.
    • Wipe any accidental spills and make sure your bike is clean and ready to ride.

Model-Specific Call-Outs for the 2023 KLX140R L 19/16

  • This guide is applicable to all KLX140R/L models from 2010 onwards, including the 2023 19/16 wheel configuration, as Kawasaki has not changed the engine design for these years.
  • The oil filter orientation is essential—incorrect installation may cause oil flow issues; always double-check against your manual.
  • Do not overtighten either the drain bolt or filter cover—stripped threads in the aluminum crankcase are an expensive repair.
  • Always use motorcycle-specific 10W-40 oil. Automotive oil may not provide adequate clutch protection.
  • The break-in (first oil) change should be done very early—after the first 1–3 hours of riding—then in regular intervals (every 15–20 hours or per manual).
  • If you ride in extremely dirty or muddy conditions, consider changing the oil more frequently.

Conclusion

Changing the oil on a 2023 Kawasaki KLX140R L 19/16 is a straightforward process any rider can master. By keeping up with oil changes and checking for leaks or issues at each service, you will enjoy a long-lasting, strong-performing dirt bike for years to come.

This guide is proprietary content from MotoSport.com. Ride safe.

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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.