How to Change the Oil in a 2018 Kawasaki KLX110L

Shop parts for a 2018 Kawasaki KLX110L Dirt Bike.

Changing the oil on your 2018 Kawasaki KLX110L is a crucial maintenance task that ensures your dirt bike runs smoothly and lasts longer. This guide breaks down the process step-by-step, highlighting the specific needs of the KLX110L and providing tips to guarantee a clean, efficient oil change, all proprietary to MotoSport.com.

Tools and Materials Needed

  • Oil drain pan
  • 8mm, 12mm, and 17mm sockets
  • 3/8" ratchet and extension
  • Torque wrench
  • Clean rags or shop towels
  • New engine oil (10W-40, 1 liter)
  • New oil filter (if changing filter; check compatibility–e.g., K&N KN-112)
  • Funnel (optional, but recommended for clean filling)

Preparation and Safety

  • Ensure the bike is on a level surface with the engine off and cool. To help the old oil drain thoroughly, it’s best to run the engine for 2–3 minutes to warm up the oil—this reduces viscosity and carries more contaminants out with it.
  • Turn the engine off and let it sit long enough for the exhaust to cool so you don’t burn yourself when removing the skid plate or drain bolt.

Step-by-Step Process

1. Remove the Skid Plate

  • Use an 8mm socket to remove the two bolts on each side of the skid plate.
  • Next, use a 12mm socket to remove the two bolts located behind the skid plate.
  • Carefully remove the skid plate and set it aside. Take special care if you’ve just run the engine—exhaust components may still be hot.
    Tip: Wipe away any excess dirt or debris from the drain area to prevent contamination.

2. Remove the Oil Fill Cap

  • Unscrew the oil fill cap located on the right side of the engine. This step helps vent the crankcase and allows old oil to drain more efficiently.

3. Drain the Oil

  • Position an oil drain pan beneath the engine.
  • Using a 17mm socket and ratchet, remove the oil drain bolt located at the base of the engine.
  • Let the old oil flow out completely. Allow several minutes for all old oil to drain.

4. (Optional) Change the Oil Filter

  • The 2018 KLX110L may require periodic changing of the oil filter. If you are replacing the filter, remove the oil filter cover—typically secured by three bolts.
  • Pull out the old filter and install a new one (such as the K&N KN-112), ensuring correct orientation.
  • Before replacing the cover, make sure your sealing surface and O-rings are clean and in good shape.

5. Reinstall the Drain Bolt

  • Wipe the drain bolt clean and inspect the crush washer—replace it if necessary.
  • Thread the bolt by hand to avoid cross-threading, then tighten to factory specifications using a torque wrench (refer to your owner’s manual for the correct torque value; typically around 18 ft-lbs).

6. Add Fresh Oil

  • Using a funnel, pour in 1 liter (33.8 oz) of 10W-40 motorcycle engine oil. If you did not change the filter, start with approximately 0.9 liters.
    Note: Always use oil designed for wet clutch motorcycles—never automotive oil.

7. Check the Oil Level

  • With the bike upright and level (not on the side stand), observe the oil sight glass located on the lower right side of the engine case.
  • The oil level should be between the upper and lower marks.
  • If necessary, add small amounts of oil and re-check.

8. Reinstall the Skid Plate

  • Re-secure the skid plate using the 8mm and 12mm bolts you removed earlier.
  • Double-check torque on all fasteners to manufacturer recommendation.

9. Start the Engine and Recheck

  • Start the engine and let it idle for 2–3 minutes.
  • Turn it off and wait a few minutes for oil to settle, then check the oil level again at the sight glass. Top off if necessary.

Model-Specific Call-Outs for the 2018 KLX110L

  • The 2018 KLX110L does not use an external spin-on oil filter; its oil filter is internal and only needs replacement periodically, not every oil change. Most routine oil changes are simply drain-and-fill.
  • Always keep the bike upright when checking or filling oil, as an incorrect reading can lead to overfilling or underfilling.
  • If you've lost track of time between oil changes, a healthy schedule for the KLX110L is every 10–15 hours of riding or at least once per season.
  • Do not overtighten the drain bolt—stripped threads are a common and expensive mistake on small bikes.

Finishing Up and Safety Tips

  • Dispose of used engine oil and filters properly—your local auto parts store or MotoSport's local partners may offer recycling services.
  • Double-check for leaks around the drain bolt and filter area after your first post-change ride.
  • Regular oil changes on your 2018 KLX110L will help maximize performance and engine life, ensuring fun and reliability every time you ride.

Get all your Kawasaki KLX110L oil change parts and tools at MotoSport.com.

Related Shopping Categories

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Shop Tools for a 2018 Kawasaki KLX110L Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2018 Kawasaki KLX110L 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.