How to Change the Oil in a 2024 Kawasaki KX450 – MotoSport.com Guide

Shop parts for a 2024 Kawasaki KX450 Dirt Bike.

Routine oil changes are vital for maximizing the performance and longevity of your 2024 Kawasaki KX450. Kawasaki recommends changing the oil and filter every 15 hours of riding or every six races—whichever comes first. Follow this comprehensive, bike-specific guide for a proper, mess-free oil change.

Tools and Supplies Needed

  • Large flathead screwdriver
  • Socket wrench
  • Socket extensions
  • 8mm socket
  • 12mm socket
  • Torque wrench
  • Angled pick (for removing O-rings or stubborn filters)
  • Funnel
  • Fluid drain pan
  • Stool or bike stand
  • Gloves
  • Clean rags
  • 1 quart of 10W-40 full synthetic motorcycle oil
  • Oil filter (K&N KN207 or OEM equivalent)
  • New crush washer

Step-by-Step Procedure

  1. Warm up the Engine
    Place your KX450 on a stable stand. Start the engine and let it run for 3-5 minutes. This warms and thins the oil, helping it drain completely. Shut off the engine and let the bike cool down enough to handle.
  2. Remove the Skid Plate (if equipped)
    Use the appropriate tool to remove the skid plate, giving you access to the drain bolt and oil filter.
  3. Drain the Oil
    Locate the oil drain bolt on the bottom of the engine. Using your 12mm socket, carefully loosen and remove the bolt over your fluid drain pan. Allow all oil to fully drain. Replace the crush washer each time you remove the drain bolt to prevent leaks.
    2024 KX450 Note: The new model includes an updated oil screen. Be sure to inspect and clean it each oil change.
  4. Remove the Oil Filter
    The oil filter is typically located on the engine's right side. Use your 8mm socket to remove the three bolts securing the filter cover. Carefully pull off the cover and remove the old filter. Pay attention to the filter spring behind the filter—do not lose it.
    Tip: Have some rags ready; some oil may spill out when you remove the cover.
  5. Install the New Oil Filter
    Lightly oil the new filter's O-ring and install it in the same orientation as the original, with the spring in its proper place. Reinstall the cover and torque the bolts to Kawasaki's recommended specification (8mm bolts typically require 7-9 ft-lb; check your manual).
  6. Inspect and Clean the Oil Screen (2024-specific callout)
    The 2024 KX450 uses a separate oil screen. With the drain bolt removed, gently remove and inspect the screen for debris and clean it thoroughly before reinstalling.
    Failure to clean the oil screen can lead to oil flow restriction and engine damage.
  7. Reinstall the Drain Bolt
    Install a new crush washer on the drain bolt and torque it to the manufacturer's specification (usually around 13 ft-lb, but confirm with your service manual).
  8. Add Fresh Oil
    Position your funnel and pour in one quart (946ml) of 10W-40 full synthetic motorcycle oil, or to the recommended level according to the manual.
    2024 KX450 NOTE: Oil capacity is unchanged from previous years. Always check the manual for confirmation.
  9. Check Oil Level
    With the bike upright and level, start the engine and let it idle for 30 seconds, then turn it off. Wait a minute, then check the oil level via the inspection window on the engine's right side. The oil level will change depending on the bike's position and engine speed; consult your manual for the exact method.
    If low, add oil in small increments and repeat the check.
  10. Reinstall the Skid Plate (if removed)
  11. Disposal
    Properly dispose of used oil and filters at your local recycling center—never pour old oil down drains or onto the ground.

2024 Model-Specific Call-Outs

  • New oil screen: Inspect and clean with every oil change to protect your engine.
  • Break-in oil: Always change the factory fill oil after the first ride or hour of use to remove debris from break-in. Changing early supports long-term engine health.
  • Oil capacity: Remains consistent with previous models; refer to your manual but one quart suffices for most 2024 KX450s.
  • Oiling system: The 2024 KX450 uses an advanced lubrication system; always use high-quality, motorcycle-specific oil to maintain clutch and engine performance.
  • Checking oil level: The inspection window's reading is only accurate when the bike is upright and after the engine has run briefly; allow time for the oil to settle before checking.

Quick Tips

  • Always replace the oil filter and crush washer at each change.
  • Hand-tighten bolts before torquing to avoid stripping threads.
  • Inspect oil for glittery particles (sign of internal engine wear).
  • Keep a log of oil changes and hours ridden.

Following these steps with high-quality products from MotoSport.com ensures your 2024 Kawasaki KX450 stays in peak condition. If in doubt, always consult your factory service manual or a qualified MotoSport mechanic for advice.

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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.