How to Change the Oil in a 2019 Yamaha WR250R (DUAL SPORT)

Shop parts for a 2019 Yamaha WR250R Dirt Bike.

Keeping your 2019 Yamaha WR250R running smoothly requires regular oil changes. Follow this detailed, model-specific guide from MotoSport.com to make the process easy and foolproof.

Tools & Materials Needed

  • Socket wrench set (10mm and possibly 8mm sockets for the skid plate, 12mm for drain plug)
  • Torque wrench (for precise reinstallation)
  • Oil drain pan
  • Funnel
  • Rubber gloves
  • Clean rags or paper towels
  • New oil filter (recommend OEM or equivalent)
  • Fresh engine oil (YAMALUBE 4, SAE 10W-30 or SAE 20W-40; many WR250R owners use 10W-40)
  • Replacement crush washer for the drain bolt (highly recommended)

Model-Specific Call-outs for the 2019 WR250R

  • Oil Capacity:– 1.3L (when not changing filter), 1.4L (when changing filter)
  • Oil filter cover bolts:– Tighten to 10 Nm
  • Oil drain bolt:– Tighten to 20 Nm (about 14 ft-lbs)
  • Check the oil level:– Use the sight glass on the lower right side of the engine; level should be between the upper and lower marks with the bike upright and on level ground
  • Change Frequency:– Engine oil every 3,000 miles, oil filter every 6,000 miles (many riders change both at each oil change for longevity)

Step-by-Step Instructions

  1. Warm up the Engine
    Start the WR250R and let it idle for 2-3 minutes. This warms up the oil so it drains more thoroughly.
  2. Remove the Skid Plate
    Use the appropriate socket (usually 8mm or 10mm) to remove the bolts holding the skid plate, if equipped. Set the bolts aside, keeping track for reinstallation. Tip: Cleaning around the oil drain area before removal helps prevent dirt from entering the engine.
  3. Drain the Old Oil
    Place your oil drain pan under the engine. Use a 12mm socket to loosen and remove the oil drain bolt at the bottom of the engine. Allow all oil to flow into the drain pan. Inspect and replace the drain bolt crush washer if worn or damaged.
  4. Remove the Oil Filter
    Locate the oil filter cover on the right side of the engine. Use a socket wrench to remove the three bolts holding the cover. Carefully pull off the cover and remove the old oil filter. Pay attention to the small O-ring on the cover; do not lose it. Inspect the rubber O-ring and replace if cracked or deformed.
  5. Install the New Oil Filter
    Lightly oil the seal of your new filter. Place it onto the engine, making sure it seats properly. Reinstall the oil filter cover, ensuring the O-ring is correctly positioned. Tighten the filter cover bolts to 10 Nm (do not over-tighten).
  6. Replace and Tighten the Drain Bolt
    Install the drain bolt with a new crush washer if you have one. Torque to 20 Nm (14 ft-lbs) for a secure seal.
  7. Add Fresh Oil
    Remove the oil filler cap (right side of engine). Use a funnel to pour in 1.4L of fresh oil if you replaced the filter, or 1.3L if you didn't. Reinstall the oil fill cap securely.
  8. Start the Engine & Check for Leaks
    Start the engine and let it idle for 30 seconds. Check carefully for any leaks around the filter and drain plug. Stop the engine and let it sit for a minute to allow oil to drain fully into the sump.
  9. Check Oil Level
    With the bike upright (not on the sidestand) and on level ground, check the oil level through the sight glass on the right side. The oil should be between the upper and lower marks–add oil if necessary, being careful not to overfill.
  10. Reinstall Skid Plate
    Bolt the skid plate back into place, making sure all fasteners are tightened securely.
  11. Dispose of Old Oil Responsibly
    Pour the old oil into a sealed container and recycle it according to local regulations.

Extra Tips For the 2019 Yamaha WR250R

  • Always double-check the drain bolt and filter bolts for proper torque to avoid oil leaks
  • Keep an eye on the O-ring condition— they're small but critical for sealing
  • If you ride in harsh or muddy environments, consider changing oil more frequently
  • If the oil level is slightly high after the first fill, it's normal for it to settle as the oil circulates

Performing regular oil changes is the single most important thing you can do to extend the life of your 2019 Yamaha WR250R. With the right tools, quality oil, and careful attention to detail, you'll keep your dual sport running in top form ride after ride.

MotoSport.com is your source for Yamaha WR250R maintenance parts, OEM oil filters, and expert DIY support.

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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.