How to Change the Oil in a 2013 Yamaha WR250F

Shop parts for a 2013 Yamaha WR250F Dirt Bike.

Regular oil changes are critical for keeping your 2013 Yamaha WR250F running at peak performance on and off the track. This guide will walk you through each step needed to change your oil safely and efficiently, with specific details and call-outs for this model. All information here is proprietary to MotoSport.com.

Tools and Supplies Needed

  • Engine oil (1.3 liters with filter change; use high-quality 10W-40 or as specified in your owner’s manual)
  • New oil filter
  • Oil drain pan
  • Socket wrench set
  • 8mm and 12mm sockets
  • Torque wrench (able to measure metric torques)
  • Funnel (to avoid spills)
  • Clean rags/shop towels
  • Replacement crush washer for drain bolt (recommended)
  • O-ring set for the oil filter cover (recommended to inspect/replace)
  • Gloves (optional, but recommended)

Step-by-Step Instructions

  1. Warm Up the Engine
    Start and idle your bike for about 5 minutes. Warm oil flows faster and carries away more contaminants.
    Call-out:– Never drain cold oil; it leaves behind more residue and doesn’t flow as well.
  2. Stabilize the Bike
    Put your bike upright on a stand or lift so it’s stable and vertical. This ensures complete draining of the oil.
  3. Remove the Skid Plate (if equipped)
    Use the appropriate socket to remove any skid plate bolts blocking access to the drain plug.
    Call-out:– The WR250F has a removable skid plate—this step provides easier access to drain and oil filter bolts.
  4. Remove Oil Filler Cap
    Unscrew the oil filler cap to prevent vacuum buildup and promote faster draining.
  5. Locate and Remove Drain Plugs
    There are two main oil drain bolts on this bike:
    • Main drain bolt on the right side of the crankcase (use a 12mm socket).
    • Reservoir drain bolt (located on the lower frame cradle on steel-frame WRs, or by the oil tank on aluminum-frame models).
    Make sure your oil drain pan is right underneath. Carefully remove both bolts, and drain all oil.
    Call-out:– If oil doesn’t flow well from the reservoir, you may need to release the breather bolt at the top of the reservoir or simply remove the dipstick, depending on the frame type.
  6. Remove and Replace Oil Filter
    The oil filter is behind a cover with three Allen (hex) bolts. Remove the cover to access the filter, and be cautious as a small amount of oil will leak out.
    • Replace the old filter with a new one. Lightly oil the new O-rings if you’re replacing them, which is recommended if they appear flattened or damaged.
    • Keep track of which cover bolt goes where; they may be different lengths.
  7. Inspect and Clean Parts
    Wipe down the oil filter cover and case sealing surfaces. Check that old O-rings are not stuck or damaged. Install new O-rings as necessary.
  8. Reinstall Oil Filter Cover
    Replace the oil filter cover and torque the three bolts to factory specs (typically 10 Nm). Replace the drain bolt with a new crush washer if possible and torque to 20 Nm.
  9. Refill with New Oil
    With the bike still upright, add 1.2 liters if you didn’t change the filter; add 1.3 liters if you did (always check your bike’s specific capacity in your owner’s manual).
    Use a funnel to avoid spilling oil on your engine or frame.
  10. Check Oil Level
    Replace the filler cap and run the engine for a few minutes to circulate the new oil. Stop the engine; wait one minute, then check the level with the dipstick (inserted, not threaded in). Ensure oil is within the two marks. Add small amounts if needed.
  11. Inspect for Leaks
    Examine around the oil filter and both drain plugs for any sign of leaks. Double-check your torques if you notice spills.
  12. Dispose of Used Oil and Filter Properly
    Take your used oil and filter to a recycling center or auto parts store — never dump them.

Key Model-Specific Tips for the 2013 Yamaha WR250F

  • Oil Capacity: 1.3 liters with a filter change. Check level with the dipstick, not through a sight glass.
  • Oil Type: Use YAMALUBE 4, SAE 10W-30 or 10W-40 for best performance, or your preferred premium equivalent.
  • Drain Plug Locations:
    • On aluminum-frame WRs, reservoir is on the side. For older steel-frame WRs, drain plug is higher up the frame cradle.
    • Remember to remove the breather bolt or dipstick to help draining if oil doesn’t flow well from the reservoir.
  • O-Rings: Inspect all O-rings at the oil filter cover and replace if any are flattened or show wear. These are common sources of leaks.
  • Service Intervals: Change oil every 1,000 km or after every race, whichever comes first.

Performing an oil change regularly as outlined above is one of the best investments you can make in your Yamaha WR250F. It’s a straightforward process that pays off in engine longevity, reliability, and peak performance on every ride.

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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.