How to Change the Oil in a 2009 Kawasaki KLX110 – MotoSport.com Guide

Shop parts for a 2009 Kawasaki KLX110 Dirt Bike.

Changing the oil in your 2009 Kawasaki KLX110 is one of the simplest and most effective tasks for prolonging engine life and improving performance. Even if you’re new to dirt bike maintenance, following this step-by-step guide will make the process straightforward and help you avoid rookie mistakes. This guide is tailored specifically to the 2009 model, with special notes and tips to keep your KLX110 running at its best.

Tools and Supplies Needed

  • 3/8” ratchet and extension
  • 8mm, 12mm, and 17mm sockets
  • Torque wrench (preferably with Nm and ft-lb scales)
  • Oil drain pan
  • Fresh 10W-40 motorcycle oil (see call-outs below)
  • Replacement oil filter (if required)
  • Clean rags for wiping spills and sealing surfaces
  • Gloves (optional, but recommended)

Step-by-Step Oil Change Instructions

  1. Run the Engine Briefly
    • Start your KLX110 and let it idle for 2-3 minutes. This warms up the oil, making it thinner and easier to drain.
    • Note: If you ran the engine before removing the skid plate, be very careful—exhaust components and the engine may be hot.
  2. Remove the Skid Plate
    • Use your 8mm socket to remove the bolts on each side of the skid plate and the two 12mm bolts behind the skid plate.
    • Set the plate and hardware aside for reinstallation.
  3. Prepare to Drain the Oil
    • Place your oil drain pan directly underneath the engine drain bolt (17mm).
    • Carefully remove the oil fill cap to allow air in—this speeds drainage.
  4. Drain the Oil
    • With your 17mm socket, carefully loosen and remove the drain bolt. Allow all the old oil to flow out into the pan.
    • Tip: Inspect the oil for metallic flakes or unusual contaminants. Presence of debris may indicate engine wear.
  5. Replace the Oil Drain Bolt
    • Once the oil is finished draining, clean the drain bolt and wipe the area around the drain hole.
    • Reinstall the drain bolt and tighten to spec—do not overtighten (use a torque wrench if you have one; check the owner’s manual for recommended torque).
  6. Refill with Fresh Oil
    • Using a funnel, pour in 0.9 liters (900ml) of 10W-40 motorcycle oil if NOT replacing the filter. If you change the oil filter, use 1.0 liter.
    • Replace and tighten the oil fill cap.
  7. Check the Oil Level
    • Start the bike and let it idle for 2-3 minutes, then turn it off and let it rest for another 2-3 minutes to allow oil to settle.
    • With the bike upright (not on the kickstand), inspect the oil level via the sight glass. The oil should be between the upper and lower level marks.
    • If low: Add oil slowly, checking often.
      If high: Drain off a small amount through the drain bolt.
  8. Reinstall the Skid Plate
    • Replace the skid plate with the original bolts, ensuring all are tightened to factory spec to protect the underside of your KLX110.
  9. Run and Final Check
    • Start your KLX110 and let it idle once more. Check for leaks at the drain bolt and around the oil fill cap.
    • Double-check the oil level, adjust as necessary, and wipe any drips.

Model-Specific Callouts for the 2009 KLX110

  • The 2009 KLX110 does not use a conventional oil filter element. Simply draining the oil and refilling is sufficient for routine maintenance. If you have a modified or KLX110L model with an oil filter kit installed, follow the kit manufacturer’s procedure for filter replacement.
  • Oil capacity for this year: 0.9 liters without filter, 1.0 liter with an aftermarket filter.
  • Sight glass: Use the right side crankcase sight glass to check the level with the bike upright.
  • Bolt torque: Always check bolt torque referenced in the owner’s manual.
    Overtightening can strip small bolts or damage the aluminum engine case.
  • Only use 10W-40 JASO MA/MA2-rated motorcycle oil. Automotive oils can cause clutch slippage.

Tips from MotoSport.com

  • Warm up the bike before draining for a fuller, faster drain and to suspend contaminants.
  • Always dispose of used oil and any oily rags responsibly—never down the drain or in regular trash.
  • Consider keeping a maintenance log to track oil changes and intervals for your KLX110.
  • If you’re unsure about anything, your MotoSport.com team can help with parts, oil, and tools for a 2009 Kawasaki KLX110.

Summary

Changing the oil on your 2009 Kawasaki KLX110 is a quick, satisfying job you can accomplish with a few tools and some attention to detail. Care for your dirt bike and it will pay you back with smoother power, longer life, and fewer expensive surprises down the road.

Related Shopping Categories

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Shop Oil Fillers and Drain Plugs for a 2009 Kawasaki KLX110 Dirt Bike.

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.