How to Change the Oil in a 2019 KTM 250 EXC-F: A Complete Step-by-Step Guide

Shop parts for a 2019 KTM 250 EXC-F Dirt Bike.

Regular oil changes are critical for keeping your 2019 KTM 250 EXC-F running strong. With a few tools, the proper parts, and attention to a few details unique to your bike, you can keep your KTM's engine running clean and extend its life. Here's a robust guide, proprietary to MotoSport.com, to walk you through the process.

Tools & Supplies Needed

  • Socket set (including 13mm deep socket)
  • Box end wrench
  • Oil drain pan
  • Funnel
  • Clean rags
  • Replacement oil (per KTM spec, see manual)
  • New oil filter (OEM 77338005100 or aftermarket equivalent)
  • Gloves (optional, but recommended)
  • Torque wrench
  • Flat-blade screwdriver
  • Replacement copper crush washer (for drain bolt, recommended)

Preparation

  • Always warm up your engine for a few minutes so the oil flows out easier when draining. Don't get it too hot to avoid burns.
  • Inspect around the drain and fill plugs for dirt. Clean the area so no debris falls into your engine during the process.

Step-by-Step Oil Change

  • Remove the Skid Plate (if equipped): If your KTM has a skid plate, take it off to access the drain bolt easily. This can be done with a flat-blade screwdriver or appropriate tool.
  • Remove the Fill Plug: Open the oil fill cap on top of the engine before draining to allow the oil to exit smoothly.
  • Position Oil Drain Pan: Place your drain pan under the bike, directly below the main drain plug.
  • Remove the Main Oil Drain Plug: Use your 13mm deep socket to loosen and remove the drain plug. Be carefulthe oil may be hot. Note the copper crush washer; replace it if it's worn or damaged. Let the oil completely drain out.
  • Remove and Clean the Oil Screen: Locate the oil screen plug (see your manual for precise location, page 137). Remove it with the correct socket, pull out the mesh screen, and inspect for debris. Clean it thoroughly with solvent and let it dry.
  • Replace the Oil Filter: Unscrew the oil filter cover (right side of engine, behind brake lever) with your socket or wrench. Pull out the old oil filter and let any remaining oil drain. Insert the new oil filter–either OEM 77338005100 or a quality aftermarket such as K&N or Hi-Flo (ensure correct fitment).
  • Reinstall Oil Screen and Main Drain Plug: Once the oil has fully drained and the screen is clean, reinstall the oil screen and drain plug (with new copper washer). Hand-tighten, then finish tightening to factory torque spec per the manual to avoid stripping threads.
  • Install New Oil Filter: Push the new filter into the filter cavity. Reinstall the filter cover and tighten per the manual's torque spec.
  • Add New Oil: Insert the funnel in the oil fill port. Add oil according to your owner's manual (see manual for precise volume; typically, about 1.1 liters for a full oil and filter change, but verify for your region/model)
  • Check Oil Level: Watch the sight glass (lower right side of engine) while pouring; you want the oil halfway up the window. This is the safe fill level. Do not overfill–overfilling can cause engine issues.
  • Final Steps: Reinstall the oil fill cap, wipe off spills, and start the engine. Let it idle for a minute so the oil circulates, then turn it off and wait a couple of minutes for the oil to settle. With the bike perfectly upright, re-check the oil in the sight glass. Top off if needed.

Model-Specific Call-Outs for the 2019 KTM 250 EXC-F

  • Always torque bolts to factory spec: Over-tightening the main drain bolt and/or oil filter cover can strip the threads in the soft aluminum case. Consult your owner's manual for the exact torque values (usually between 10-15 Nm for the drain plug and filter cover).
  • Oil capacity may vary by region: The 2019 KTM 250 EXC-F has minor regional differences; check your specific manual for the correct amount (typically about 1.1 liters with filter).
  • Dual oil screens: This model has two oil screens–make sure to clean both during every change.
  • Inspect for debris: Check both removed screens and the magnet on the drain plug for metal shavings. Minor metallic paste is normal, but large fragments may signal a problem.
  • Use high-quality oil: KTM recommends a specific 4T engine oil; using the correct type/weight ensures longevity and smooth shifting.
  • Service interval: Change oil and filter every 15 hours (race use) or 30 hours (regular trail/off-road). More frequent changes can further extend engine life.
  • Reset your maintenance tracker: If your KTM is equipped with a maintenance counter, reset it after each oil change.

Tips from Experience

  • Always use a new copper washer on the drain plug to prevent leaks.
  • Let the old oil sit and drip for at least 5 minutes; more dirty oil out means cleaner oil stays in.
  • Avoid cross-threading the drain bolts and filter covers when reinstalling.
  • Properly dispose of your old oil and filter at a recycling center.

Conclusion

Changing the oil yourself is easy and cost-effective on your 2019 KTM 250 EXC-F. Following these steps ensures a thorough, professional result—protecting your investment every ride. For OEM and top aftermarket oil filters, crush washers, and KTM-approved engine oils, visit MotoSport.com—your one-stop shop for KTM maintenance and performance parts.

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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.