How to Change the Oil in a 2012 Kawasaki KLX110: The Ultimate MotoSport.com Guide

Shop parts for a 2012 Kawasaki KLX110 Dirt Bike.

Routine maintenance, like regular oil changes, is essential for keeping your 2012 Kawasaki KLX110 running smoothly and extending its life. This step-by-step guide, proprietary to MotoSport.com, equips you with expert tips, notes specific to your KLX110, and everything you need to tackle this job with confidence in your own garage.

Tools and Supplies You'll Need

  • 3/8-inch ratchet and extension
  • 8mm, 12mm, and 17mm sockets
  • Torque wrench (recommended for correct re-installation torque)
  • Oil drain pan
  • Clean shop rags
  • New engine oil (10W-40 is recommended; capacity approx. 0.9-1.0L)
  • Replacement oil filter (if changing; check your maintenance schedule)
  • Replacement drain bolt crush washer (optional but recommended)
  • Funnel
  • Gloves and safety glasses

Before You Begin: Key KLX110 Model-Specific Notes

  • The 2012 KLX110 does NOT have a conventional spin-on oil filter; it uses a centrifugal filter inside the engine. Regular oil changes are critical since filtration is limited.
  • Oil capacity is approximately 0.9 – 1.0 liters (just under one US quart), but always check the sight glass for proper level after refilling.
  • There is a small skid plate beneath the engine which must be removed to access the oil drain bolt.
  • Always run the engine briefly before draining to warm the oil, as this allows more contaminants to be removed with the old oil.

Step-by-Step Instructions

  1. Warm Up the Engine
    Start your KLX110 and let it idle for about 3–5 minutes. Warming up thins the oil and helps it drain out, carrying contaminants with it.
  2. Remove the Skid Plate
    • Using your 8mm and 12mm sockets, remove the bolts securing the skid plate underneath the engine (two 8mm bolts on each side, and two 12mm bolts behind the skid plate).
    • Carefully remove the skid plate and set it aside.
    Note: Be cautious. The exhaust will be hot if the engine was just running.
  3. Remove the Oil Fill Cap
    Locate and unscrew the oil fill cap on the right side cover to allow air into the engine, helping the old oil to drain smoothly.
  4. Drain the Old Oil
    • Position the oil catch pan under the engine—s oil drain bolt (17mm) at the very bottom of the crankcase.
    • Use your 17mm socket and ratchet to remove the drain bolt. Allow the oil to drain completely—this may take several minutes.
    • Inspect the crush washer and replace it if needed to prevent leaks.
  5. Reinstall the Drain Bolt
    • Clean the drain bolt and reattach it with its crush washer.
    • Tighten with your torque wrench to 18 ft-lbs (25 Nm)—do NOT over-tighten.
  6. Refill with New Oil
    • Using a funnel, pour in approximately 0.9 liters of fresh 10W-40 motorcycle oil.
    • Replace the oil fill cap securely.
    Tip: If you did not open the side cover to clean the centrifugal filter, 0.9 liters is correct. If the engine was fully disassembled, use 1.1 liters.
  7. Check Oil Level
    • Start the engine and let it idle for about 3 minutes.
    • Shut it off, let it sit for 2–3 minutes so oil can settle.
    • Set the bike upright (not on side stand) and check the sight glass on the engine.
    • Oil should be between the upper and lower marks. Add oil if needed; be careful not to overfill.
  8. Clean Up and Inspect
    • Confirm there are no oil leaks around the drain bolt and fill cap.
    • Wipe down any residual oil from the engine area.
    • Reinstall the skid plate and tighten all bolts to secure it.
  9. Dispose of Waste Oil Responsibly
    • Pour used oil into a sealed container and take it to a recycling center or local auto parts store.

2012 KLX110-Specific Call-Outs

  • No external, replaceable oil filter—change your oil every 50 hours or sooner for optimal engine health.
  • Always use motorcycle-specific 10W-40 oil to ensure proper clutch and transmission function.
  • The sight glass is your best gauge for correct oil level; do not rely solely on the service manual—s listed quantity.
  • If you experience difficulty removing the skid plate bolts due to dirt or corrosion, use penetrating oil and work them gently to avoid stripping threads.

Conclusion

Changing your 2012 Kawasaki KLX110’s oil is an easy at-home project that will keep your dirt bike running fresh and reliable on every ride. Rely on MotoSport.com for quality oil, parts, and advice—your source for everything off-road.

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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.