How to Change the Oil in a 2014 Kawasaki KLX250S

Shop parts for a 2014 Kawasaki KLX250S Dirt Bike.

Keeping your 2014 Kawasaki KLX250S in optimal condition means sticking to a regular maintenance schedule—oil changes are at the core of this care. Follow this detailed how-to guide proprietary to MotoSport.com, and ensure your dirt bike’s engine enjoys a long, healthy life.

Tools and Materials Needed

  • 3/8-inch ratchet
  • 14mm socket
  • 8mm socket
  • Torque wrench
  • Drain pan
  • Funnel
  • Shop rags
  • Oil filter (Kawasaki specific for KLX250S)
  • Engine oil (Kawasaki 10W40 or manufacturer-specified; approximately 1.1 quarts – 35 ounces)
  • New drain plug washer (recommended)
  • Gloves (optional but highly recommended)

Step-by-Step Oil Change Instructions

  • Warm the Engine
    • Start your KLX250S and let it idle for 1–2 minutes. This warms the oil, thinning it out for more complete draining.
    • Let it cool enough so the oil won’t burn you—warm, not hot. Never drain oil from a cold engine, as contaminants will remain suspended.
  • Locate and Loosen the Oil Filler Cap
    • Remove the seat if needed to access the filler cap.
    • Twist off the oil filler cap on the right side of the engine. This allows air in, so the oil drains smoothly.
  • Position the Drain Pan and Remove the Drain Plug
    • Slide your drain pan beneath the engine, aligning with the oil drain bolt under the crankcase.
    • Using your 14mm socket and ratchet, remove the drain plug. Be careful not to lose the drain plug washer; replace it if crushed or damaged.
    • Allow the old oil to drain completely—don’t rush this for best results.
  • Remove the Oil Filter
    • The filter housing is on the right side of the engine. Use an 8mm socket to remove the three bolts holding the cover.
    • Carefully pull off the oil filter cover. Note a spring behind the filter; do not lose it.
    • Remove the old oil filter, and clean the cavity and cover with a shop rag.
  • Install the New Oil Filter
    • Insert the new oil filter (mind orientation—usually the rubber O-ring faces outwards).
    • Ensure the spring is correctly seated behind the filter before reinstalling the cover.
    • Hand-tighten then torque the bolts: for filter cover bolts, use a low setting (very little pressure; do not overtighten).
  • Reinstall the Drain Plug
    • Double-check the plug washer, then reinstall the drain plug by hand to avoid cross-threading.
    • Tighten to manufacturer torque spec: around 11 ft-lbs (double-check your manual for your year; this is typical) Do not overtighten.
  • Add Fresh Oil
    • Place a funnel in the oil fill hole and slowly pour in new oil: approximately 1.1 quarts (35 ounces) for an oil/filter change but always add gradually and check the sight glass or dipstick for level to avoid overfilling.
    • Let the oil settle, then check the oil level. Add more if needed, keeping the level between “low” and “high” marks.
    • Reinstall the fill cap.
  • Start and Inspect
    • Start the bike and let it idle for 30–60 seconds.
    • Shut it off, let oil settle, and check for leaks at the drain plug and filter cover.
    • Recheck the oil level; top off if necessary.
  • Dispose of Used Oil Responsibly
    • Take waste oil and used filter to your local recycling center or auto parts store.

Model-Specific Call-Outs for the 2014 KLX250S

  • The KLX250S includes a removable drain plug washer—always inspect or replace to prevent leaks. Always double-check that the spring behind the oil filter is properly placed during reinstallation.
  • Torque specs are crucial: Drain plug should be torqued to 11 ft-lbs (approximately)—do not overtighten any bolts, especially the small filter cover bolts, which are easily stripped.
  • Oil capacity is slightly above 1 quart—err on the side of caution and top up slowly. Most sources recommend about 35 ounces (1 quart + 3 ounces).
  • If you ride in dusty conditions, consider changing the oil more frequently—the KLX250S is air-cooled and benefits from clean oil.

Final Checks

  • Make it a habit to record the date and mileage of every oil change.
  • Match the oil filter part number to your year/model for proper fit.
  • If unsure about torque or fill specs, consult your OEM service manual or a trusted Kawasaki dealer.

Proper maintenance extends the life of your Kawasaki KLX250S and keeps your rides worry-free. For more OEM parts and maintenance tips, trust MotoSport.com.

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Shop Tools for a 2014 Kawasaki KLX250S Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2014 Kawasaki KLX250S 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.