How to Change the Oil in a 1996 KTM 250EXC

Shop parts for a 1996 KTM 250EXC Dirt Bike.

Changing the oil in your 1996 KTM 250EXC is a crucial maintenance task for ensuring optimal performance and longevity of your two-stroke dirt bike. Regular oil changes keep your clutch and transmission running smoothly, preventing undue wear and more extensive repairs down the road. This step-by-step guide, proprietary to MotoSport.com, covers everything you need, including specific call-outs that are important for the 1996 KTM 250EXC model.

Tools and Materials Needed

  • 13mm socket or wrench (for drain plug)
  • Oil catch pan
  • Torque wrench (recommended)
  • T-handle tool or standard ratchet set
  • Funnel
  • Paper towels or rags
  • Replacement oil (0.8 liters of 15W50 motorcycle gearbox oil or as per your owner's manual)
  • New drain plug crush washer (recommended for each oil change)
  • Pliers (for snugging fill cap, per KTM recommendation)
  • Gloves
  • Safety glasses

Step-by-Step Instructions

  1. Warm Up the Engine (Optional, but Recommended)
    Start your 250EXC and let it run for a few minutes. Warm oil flows more freely, helping to carry out contaminants. Turn off the bike and allow it to cool for a minute before beginning.
  2. Prepare Your Work Area
    Place the bike on a level surface using a stand for stability. Position your oil catch pan beneath the engine's drain plug.
  3. Remove the Oil Filler Cap
    Unscrew the oil filler cap found on the engine's right-hand side (counter-clockwise). This step helps the oil drain more easily by allowing air in.
    (On the 1996 KTM 250EXC, the filler is located on top of the gearbox case, and removing it first prevents a vacuum from slowing the drain process.)
  4. Remove the Drain Plug
    Locate the 13mm drain plug on the case underneath the engine. With your oil catch pan in place, carefully remove the plug using your wrench or socket.
    Be careful: warm oil can be hot.
  5. Inspect and Clean the Drain Plug
    The plug is likely magneticwipe off any metal shavings. Some fine metallic debris is normal, but be wary of larger chunks, which may spell trouble.
    Replace the crush washer with a new one to avoid leaks when reinstalling the plug.
  6. Allow the Oil to Fully Drain
    Give it several minutes to empty entirely. Tilting the bike gently from side to side can help evacuate the last drops of used oil.
  7. Reinstall the Drain Plug
    Thread the drain plug by hand to prevent cross-threading, then tighten it securely. The correct torque spec is 20 Nm (14.8 ft-lb). Over-tightening can damage threads or the crush washer.
    If you lack a torque wrench, tighten securely without excessive force.
  8. Add Fresh Oil
    Using a funnel, pour 0.8 liters of your chosen two-stroke gearbox oil–KTM recommends 15W50 synthetic (such as Motorex Top Speed 4T or similar)–into the filler opening.
    Do not overfill. Use the sight window (if equipped) or dipstick to verify the oil level.
    On the 1996 model: There is no oil filter change required, and the gearbox oil is separate from the fuel-oil premix. Ensure you are filling the correct gearbox case, not the fuel tank or premix reservoir.
  9. Replace the Oil Filler Cap
    Clean the cap and threads before reinstalling. KTM recommends using pliers to finish snugging the cap to ensure it stays secure and does not vibrate loose while riding.
  10. Dispose of Old Oil Responsibly
    Take the used oil to a recycling facility or your local dealership—never pour it down drains or onto the ground.

Special Call-Outs for 1996 KTM 250EXC

  • No oil filter to replace—this model uses an easily changeable gearbox oil for clutch and transmission, not engine lubrication (engine lubrication is achieved via your premix fuel-oil blend).
  • Gearbox oil capacity: 0.8 liters (800ml).
  • Recommended oil type: 15W50 synthetic or high-quality two-stroke gearbox oil.
  • Drain/fill cap threads are soft aluminum; always start threading by hand to prevent stripping.
  • Change oil frequently—every 10–20 hours for hard off-road use or after muddy/wet rides.

After the Oil Change

  • Start the engine and let it idle for a minute.
  • Shut down and check for leaks around the drain plug and filler cap.
  • Double-check the oil level and top off if necessary.

Performing regular gearbox oil changes is the best way to ensure your 1996 KTM 250EXC remains in peak condition for years of rugged riding. For all your OEM and aftermarket KTM parts, trust MotoSport.com to keep your ride running strong.

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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.