How to Change the Oil in a 2013 Husqvarna WR125

Shop parts for a 2013 Husqvarna WR125 Dirt Bike.

Changing the oil in your 2013 Husqvarna WR125 is a crucial maintenance task to ensure the longevity and peak performance of your dirt bike. This comprehensive guide is proprietary to MotoSport.com and will walk you through each step, including the required tools, specific tips for the WR125, and everything you need to know for a successful oil change.

Tools and Supplies Needed

  • Socket wrench set (usually 13mm or similar for the drain plug)
  • Drain pan
  • Funnel
  • Clean shop towels
  • Recommended transmission oil (refer to your owner's manual for the correct type and volume)
  • New crush washer/gasket (recommended for the drain plug)
  • Torque wrench (optional, for precise tightening)
  • Rubber gloves (optional, for cleanliness)

Step-by-Step Oil Change Process

  1. Preparation
    • Ensure your bike is on a stable, level surface and fully cooled.
    • Clean the area around the oil filler cap and the drain plug with a shop towel to prevent debris from entering the engine.
    • Have all your tools and fresh oil ready and within reach.
    • Read through your bike’s owner's manual for any model-specific instructions or oil recommendations.
  2. Locate the Drain Plug and Oil Filler Cap
    • The drain plug is located on the underside of the engine (oil sump). On the Husqvarna WR125, you may see it labeled as plug (A) in diagrams or your manual.
    • The oil filler cap is typically on the right side of the engine, above the transmission case.
  3. Drain the Old Oil
    • Position your drain pan under the drain plug.
    • Use a socket wrench to back out the drain plug carefully. Allow all the old oil to completely drain into the pan. This may take a few minutes, so be patient.
    • Inspect the oil for any metal particles or debris which could indicate internal wear issues.
    • Remove the old crush washer or gasket from the plug and replace it with a new one if available for best sealing.
  4. Reinstall the Drain Plug
    • Once the oil has drained fully, clean the drain plug and area around it with a towel.
    • Thread the plug back in by hand to avoid cross-threading, then tighten with your wrench. Avoid over-tightening—if you have a torque wrench, tighten to the specification in your manual (usually about 10–15 Nm).
  5. Refill with Fresh Oil
    • Remove the oil filler cap.
    • Place a funnel in the filler neck and slowly pour in the recommended transmission oil. For the 2013 WR125, use the amount specified in your manual. Overfilling can cause leaks or foaming.
    • Reinstall the oil filler cap securely.
  6. Check Oil Level
    • With the motorcycle upright and level, check the oil level through the inspection window (right side crankcase). The correct level should be midway in the porthole when the bike is vertical.
    • If necessary, add a small amount of oil until the level is correct.
  7. Finish Up and Dispose of Oil
    • Wipe off any oil drips or residues with a shop towel.
    • Start the engine and let it idle for a minute, then turn it off and recheck the oil level. Top up if needed.
    • Dispose of the used oil responsibly at a recycling center or automotive store.

Husqvarna WR125 Specific Tips

  • The WR125 uses a separate transmission oil. Do not use engine oil meant for 4-stroke engines.
  • The inspection window on the right crankcase makes it easy to check your oil level—always ensure the bike is perfectly upright for an accurate reading.
  • If your model has a magnetic drain plug, clean off any magnetic debris before reinstalling.
  • Use the manufacturer-recommended oil type and capacity, usually specified in your owner’s manual for the 2013 model year. Overfilling or using the wrong oil can lead to clutch or transmission issues.
  • Inspect and replace the crush washer or gasket under the drain plug every oil change to prevent leaks.

Conclusion

Changing the oil in your 2013 Husqvarna WR125 is a straightforward task when you follow the steps above and use the correct supplies. Regular oil changes keep your transmission running smooth and protect vital engine components, ensuring your Husqvarna performs both on the track and trails.

For official parts and recommended oils, trust MotoSport.com to provide everything you need for your Husqvarna maintenance needs.

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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.