How to Change the Oil in a 2019 Kawasaki KX250

Shop parts for a 2019 Kawasaki KX250 Dirt Bike.

Routine oil changes are essential to keep your 2019 Kawasaki KX250 running at peak performance. This step-by-step MotoSport.com proprietary guide provides you with detailed instructions, a list of required tools and supplies, and important model-specific tips for a successful oil change.

Tools and Supplies Needed

  • Flathead screwdriver (for the oil fill cap)
  • 8mm socket (for oil filter cover bolts)
  • 12mm socket (for drain bolt)
  • Ratchet and extension
  • Pliers (optional, for stubborn parts)
  • Oil drain pan
  • Shop rags or paper towels
  • New oil filter (Kawasaki OEM or quality aftermarket filter)
  • Fresh engine oil (Kawasaki recommends 10W-40 or 5W-40 full synthetic motorcycle oil; capacity is approximately 0.85 quarts for the 2019 model)
  • Crush washer (recommended to inspect and replace as needed)
  • Torque wrench
  • Contact cleaner (optional, for cleaning the filter housing)
  • Owner‘s manual (for verification of specs and procedures)

Step-by-Step 2019 Kawasaki KX250 Oil Change

  1. Warm up the Engine
    • Start the motorcycle and let it idle for 1-2 minutes. This warms the oil, helping it flow out smoothly and suspend any debris.
    • Do not overheat—the oil should be warm, not hot to avoid burns when draining.
  2. Secure and Prepare the Bike
    • Place the bike on a stand so it‘s level and stable.
    • Turn off the engine and allow the bike to cool slightly if necessary.
  3. Remove the Oil Fill Cap
    • Use a flathead screwdriver to remove the oil fill cap. This allows air into the crankcase so the oil drains faster and more completely.
  4. Drain the Old Oil
    • Place the oil drain pan under the engine.
    • Use a 12mm socket to remove the drain bolt on the bottom of the crankcase.
    • Make sure to catch the oil and let it drain completely.
    • Inspect the crush washer on the drain bolt; replace if damaged to prevent leaks.
  5. Remove and Inspect Oil Filter
    • Locate the oil filter cover (right side of engine).
    • Remove the two 8mm bolts holding the cover using an 8mm socket and ratchet.
    • Gently pull off the cover; be careful as some oil may drip.
    • Remove the used oil filter. Inspect for abnormal debris or metal shavings, which could indicate internal engine issues.
    • Clean the inside of the oil filter housing with a shop rag and contact cleaner.
    • Replace with a new filter, installing it with the rubber grommet facing inward.
  6. Reinstall Oil Filter Cover
    • Reinstall the oil filter cover, ensuring the spring is properly seated.
    • Tighten the 8mm bolts to 9 foot-pounds of torque.
  7. Reinstall Drain Bolt
    • Reinstall the drain bolt with crush washer.
    • Tighten to 15 foot-pounds of torque.
  8. Add Fresh Oil
    • Pour in fresh engine oil through the oil fill hole. The 2019 KX250 takes approximately 0.85 quarts (0.8 liters) of oil.
    • Check your owner‘s manual or the engine case for markings and confirmation.
    • Replace the oil fill cap and snug it down (do not overtighten).
  9. Cycle and Check Oil Level
    • Start the bike and let it idle for 3-5 minutes to circulate the new oil.
    • Shut the engine off and wait a few minutes to let the oil settle.
    • Check the oil level using the sight glass or dipstick (depending on your exact model), and top off if necessary.
  10. Check for Leaks and Clean Up
    • Inspect the drain bolt and oil filter area for leaks once the engine runs.
    • Wipe off any spilled oil from the bike.
    • Dispose of used oil and filter at a certified recycling facility.

Model-Specific Call-Outs for the 2019 Kawasaki KX250

  • Oil Capacity: The 2019 KX250 holds 0.85 quarts of oil, slightly less than a full quart. Avoid overfilling by measuring carefully.
  • Torque Specs: Always use a torque wrench: drain bolt to 15 ft-lb and oil filter cover to 9 ft-lb for proper sealing and to prevent damage.
  • No Armor or Skid Plate Removal: The 2019 KX250 has no guard or skid plate that obstructs oil changes, making the process straightforward compared to some other models.
  • Recommended Oil: Kawasaki recommends 10W-40 or 5W-40 full synthetic motorcycle oil for the KX250. Using the recommend viscosity ensures proper clutch and transmission function.
  • Filter Orientation: Install the new oil filter with the rubber grommet facing the engine to ensure correct oil flow and sealing.

Expert Tips

  • Keep a log or checklist to track oil change intervals; Kawasaki recommends changing the oil frequently, especially in racing or high-dust conditions.
  • Inspect the old oil for metallic particles–excessive debris may warrant further engine inspection.
  • Always use a new crush washer with the drain bolt to prevent leaks.
  • Tighten all fasteners to the specified torque–overtightening can strip threads or crush gaskets.

Regular oil changes are one of the simplest and most important actions you can perform to extend the life and reliability of your 2019 Kawasaki KX250. Following this guide ensures the job is done right, every time. For all your service parts, filters, and premium oils, trust MotoSport.com—your one-stop source for Kawasaki motocross maintenance essentials.

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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.