How to Change the Oil in a 2014 Yamaha WR250R (Dual Sport)

Shop parts for a 2014 Yamaha WR250R Dirt Bike.

Changing the oil in your 2014 Yamaha WR250R is an essential maintenance routine, keeping your dual sport running smoothly and prolonging engine life. This guide is proprietary to MotoSport.com and breaks down every step, tools needed, and specific notes for this model.

Tools and Supplies Needed

  • Socket wrench (10mm)
  • Torque wrench
  • Oil drain pan
  • Funnel
  • Clean shop rags
  • New oil filter (recommended every oil change)
  • New crush washer for drain bolt (recommended)
  • YAMALUBE 4, SAE 10W-30 or SAE 20W-40 (spec: 1.3L without oil filter change, 1.4L with filter change)
  • Gloves (optional, but recommended for cleanliness)
  • Flathead screwdriver (if needed to remove skid plate)

Preparation

  • Make sure the engine is warm–not hot–by running the bike for a few minutes. Warm oil drains more thoroughly.
  • Secure the bike in an upright position, ideally on a stand, and ensure the work area is clean and free of debris.
  • If equipped, remove the skid plate using the appropriate tools.

Step-by-Step Oil Change Procedure

  1. Remove the Oil Drain Bolt
    • Locate the oil drain bolt beneath the engine case.
    • Place your oil pan directly beneath the bolt to catch the draining oil.
    • Using a socket wrench, carefully loosen and remove the drain bolt. Allow oil to completely drain into the pan.
    • Inspect and replace the crush washer if it's damaged or deformed to ensure a proper seal.
  2. Remove and Replace the Oil Filter
    • Using a 10mm socket, remove the three bolts securing the oil filter cover on the right side of the engine.
    • Carefully remove the cover and old oil filter, watching for the small O-ring; do not lose it. Inspect the O-ring for wear or damage and replace if necessary.
    • Install the new oil filter onto the protrusion; ensure correct orientation.
    • Reattach the cover and tighten the three bolts to 10 Nm (verify with your torque wrench).
  3. Replace the Oil Drain Bolt
    • Once the oil is fully drained, clean and reinstall the drain bolt with the new crush washer.
    • Tighten the drain bolt to 20 Nm (14 ft-lb) using your torque wrench.
  4. Add New Oil
    • Remove the oil filler cap on the side of the engine.
    • Using a funnel, pour in 1.3 liters of oil if you did not change the oil filter, or 1.4 liters if you did change the filter. Double-check your measurement for accuracy.
    • Replace the oil filler cap securely, ensuring the O-ring is seated correctly.
  5. Circulate and Check Oil Level
    • Start the engine and let it idle for around 20–30 seconds to allow the new oil to circulate through the engine.
    • Shut off the engine and let it rest for a minute.
    • With the bike upright on level ground, check the oil level using the sight glass on the right side of the case. The oil should sit between the upper and lower lines.
    • If the level is low, add oil in small increments through the filler hole until it reaches the proper position–do not overfill.
  6. Final Steps
    • Double-check all bolts for tightness and correct installation.
    • Reinstall the skid plate if you removed it.
    • Wipe down any spilled oil and dispose of used oil and filter in accordance with environmental regulations.

2014 Yamaha WR250R-Specific Callouts

  • Oil Capacity: 1.3L without filter, 1.4L with filter – always check the sight glass for the correct level, do not rely solely on the amount you pour.
    Source: Everyday Riding
  • Recommended Oil: YAMALUBE 4, 10W-30 or 20W-40. Many WR250R riders successfully use 10W-40.
  • Filter O-Ring: Carefully inspect the small O-ring on the filter cover. Replace if necessary, as a worn or misplaced O-ring can cause leaks.
  • Check for Leaks: Start the engine after changing the oil and check around both the drain bolt and the oil filter cover for leaks. Tighten if necessary, but do not overtighten.
  • Sight Glass: The WR250R uses a sight glass on the engine case instead of a dipstick to check level; the bike must be upright and level for an accurate read.
    Source: YouTube
  • Maintenance Intervals: Yamaha recommends oil changes every 3,000 miles and filter changes every 6,000 miles, but many owners opt to change the filter with every oil change for optimal engine health.
    Source: Everyday Riding

Tips for Efficiency and Longevity

  • Changing the oil is quick–about 15–30 minutes once you have all tools and supplies ready.
  • Always use a new crush washer on the drain bolt to prevent leaks.
  • Dispose of used oil and filters at a certified recycling center.
  • Keep the motorcycle upright and on stable ground for an accurate oil level read.
  • Record your oil change date and mileage for future reference.

Routine oil changes will keep your 2014 Yamaha WR250R dual sport running strong on the street and trail. For authentic Yamaha filters, crush washers, and approved lubricants, shop at MotoSport.com for OEM and aftermarket maintenance 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.