How to change the oil in a 2019 Kawasaki KLX140R 17/14 Dirt Bike

How to Change the Oil in a 2019 Kawasaki KLX140R 17⁄14

Shop parts for a 2019 Kawasaki KLX140R Dirt Bike.

Routine oil changes are key to keeping your 2019 Kawasaki KLX140R performing at its best and ensuring long engine life. This robust guide, proprietary to MotoSport.com, walks you through the complete oil change process, including the tools you'll need, detailed steps, and KLX140R-specific tips for a smooth, mess-free maintenance session.

Tools and Supplies Needed

• Ratchet and extension
• 8mm socket
• 17mm socket
• Drain pan
• Torque wrench
• Oil filter (Kawasaki OEM part #52010-1053)
• Fresh oil (10W-40 motorcycle oil, at least 1.5 quarts–your KLX140R requires 1.22 quarts)
• Oil funnel
• Gloves and paper towels or shop rags
• Replacement drain plug washer (recommended for leak-free reassembly)

Step-by-Step Oil Change Process for the 2019 Kawasaki KLX140R

• Warm Up the Engine
  Briefly idle the engine for about a minute. This lets the oil warm up, making it thinner, so it drains out smoothly and carries away more particles.
  Tip: Do not overheat–just a minute or two is enough.
  Why? Warm oil flows faster and evacuates more debris from inside the engine.
  
• Remove the Dipstick
  Shut off the engine. Remove the oil dipstick to vent the crankcase. This step prevents vacuum lock and allows oil to escape quickly.
  Dipstick Location: Right side of the engine, above the clutch cover area.
  
• Drain the Old Oil
  Place your drain pan underneath the drain bolt (lower left side of the crankcase).
  Use your 17mm socket and ratchet to loosen and remove the drain bolt and crush washer.
  Allow oil to fully drain–give it a few extra minutes for a thorough job.
  Call-out: The KLX140R drain bolt threads can be stripped if over-tightened. Be gentle when reinstalling.
  
• Replace the Oil Filter (Optional, Recommended Every Other Oil Change)
  Locate the oil filter cover (front/lower right side of the engine case).
  Remove the 8mm bolts with your socket and extension. Carefully remove the old oil filter–some oil may drip.
  Clean the filter cover and O-ring. Insert the new filter, ensuring it’s seated properly.
  Reinstall the cover and torque the bolts evenly to the manufacturer's spec.
  KLX140R Tip: The filter is directional–match the open end toward the engine as per the manual.
  
• Install the Drain Bolt and Washer
  Replace the drain plug washer with a new one to prevent leaks.
  Thread the drain bolt back in by hand, then tighten with your torque wrench to factory spec.
  Standard Spec: 21 ft-lbs (always confirm with service manual). Don’t overtighten.
  
• Add New Oil
  Place your funnel at the dipstick opening.
  Pour in 1.1 to 1.2 quarts (1.22 quarts specified for the 2019 KLX140R with filter change).
  Tip: Add oil slowly, stopping to check the level. Avoid overfilling.
  
• Check the Oil Level
  With the bike upright and level, insert the dipstick without screwing it in, then remove and inspect.
  Oil should show between the low and high marks on the stick.
  Top up in small increments if needed.
  Manual Note: Some KLX140 models require oil level checked with dipstick unscrewed, others (like KLX140G) require it screwed all the way in–double check your owner’s manual for your model.
  
• Run and Re-Check
  Start the engine for 30 seconds. Watch for any leaks at the plug/filter. Shut down and allow to settle for 1-2 minutes. Recheck oil level and top off to the proper mark.
  

2019 Kawasaki KLX140R 17⁄14-Specific Call-Outs

• Oil Capacity Matters: The 2019 KLX140R uses 1.22 quarts with filter change–do not overfill as this can cause power loss or engine damage.
  
• Crush Washer Attention: For every oil change, use a new drain plug washer to ensure a tight, leak-free seal.
  
• Torque Spec Caution: The aluminum cases on the KLX140R are easy to strip. Always use a torque wrench and adhere strictly to the drain plug and cover bolt specs.
  
• Filter Orientation: The oil filter on this bike has a specific direction–usually, the open end faces inward toward the engine.
  
• Break-in Changes: If this is your first oil change after break-in, be prepared for oil to look extra dirty and for some fine metallic flecks–normal for new engines.
  

Final Notes

• Dispose of Used Oil Responsibly: Bring used oil and filters to a proper recycling facility.
• Record Your Maintenance: Logging oil changes helps you track engine health and resale value.

This guide covers everything KLX140R owners need to confidently change oil at home and keep that Kawasaki running strong for years to come.

For all your genuine Kawasaki parts and service products, shop MotoSport.com – your trusted source for dirt bike performance, parts, and maintenance know-how.

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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.