How to Change the Oil in a 2019 Yamaha WR250F

Shop Parts for a 2019 Yamaha WR250F Dirt Bike.

Performing regular oil changes is essential to prolong the life of your 2019 Yamaha WR250F and keep it running at peak performance. Below you'll find a comprehensive step-by-step guide, proprietary to MotoSport.com, specifically tailored for this model year, including a list of required tools, important call-outs, and instructions to ensure a smooth oil change process.

Tools & Supplies Needed

  • Engine Oil (Yamaha recommends SAE 10W-40, API SG or higher, JASO MA-approved motorcycle oil)
  • Oil Filter (OEM Yamaha or equivalent aftermarket)
  • Oil Drain Pan
  • Funnel
  • Sockets and Ratchet Set (8mm, 10mm, and 12mm commonly needed)
  • Torque Wrench
  • Gloves and Safety Glasses
  • Shop Rag or Paper Towels

Before You Begin

  • Warm up the engine for 5-10 minutes. Warm oil flows and drains more efficiently.
  • Make sure the bike is on a stand and sitting upright for accurate oil draining and refilling.
  • Always dispose of used oil responsibly at a motorcycle shop or recycling center.

Step-by-Step Oil Change Process

  1. Remove the Skid Plate (if equipped):
    Use an 8mm socket to remove the bolts securing the skid plate, if your bike has one installed.
  2. Remove Oil Filler Cap:
    Unscrew the oil filler cap or dipstick to allow air in, which helps the oil drain faster.
    Call-out for 2019 WR250F: The oil filler is on the right engine case.
  3. Remove Engine Drain Bolt:
    Locate the main engine oil drain bolt on the lower right side of the engine. Use your socket and ratchet (12mm) to loosen and remove the bolt. Allow oil to drain fully into your drain pan.
    Pro tip: Inspect the crush washer and replace it if worn.
  4. Drain Oil from the Reservoir:
    The 2019 WR250F uses a dry sump system with an oil tank. Locate the oil tank drain bolt (typically a 10mm or 12mm bolt) on the frame or reservoir and remove it.
    Note: On WR250Fs, the oil reservoir may be in the aluminum frame. If oil doesn't drain freely, loosen or remove the breather bolt at the top of the reservoir to vent air

    .
  5. Remove & Replace Oil Filter:
    Find the oil filter cover (on the right side) and remove the bolts. Carefully pull the cover free and remove the old oil filter.
    Wipe the oil filter cavity clean. Install the new oil filter (match orientation with old filter; usually the rubber side goes in first for Yamaha bikes). Replace the oil filter cover and tighten bolts to factory torque specs.
  6. Clean or Replace Oil Strainer:
    The 2019 WR250F is equipped with an oil strainer screen. Remove the strainer cover to access the screen. Inspect for debris and clean with solvent if needed. Reinstall once clean

    .
  7. Reinstall All Drain Bolts:
    Ensure all drain and strainer bolts are reinstalled and torqued to specifications (typically 10–20 ft-lbs, check your owner's manual for exact specs).
  8. Add New Oil:
    Use a clean funnel and pour in fresh oil. With the filter replaced, the oil capacity is approximately 1.3 liters (1,300 ml)

    .
  9. Check Oil Level:
    Install the filler cap securely. Start the engine and let it run for a few minutes to circulate the oil. Shut it down, wait one minute, and check oil level using the dipstick or sight glass. Add oil if needed to reach the full mark

    .
  10. Check for Leaks:
    Inspect all bolts and covers for leaks with the engine running. Tighten as required.
  11. Reset Maintenance Interval:
    If you use the Yamaha Power Tuner App or keep a logbook, record the current hours of operation to track when your next oil change is needed. Yamaha recommends oil changes every 7.5 hours of riding or every 1,000 kilometers, whichever comes first. Change the oil filter with every oil change for best engine protection

    .

Specific Call-Outs for 2019 Yamaha WR250F

  • The WR250F's dry sump system requires draining both the engine and the reservoir—don't skip either drain plug.

  • Check and clean the oil strainer every few oil changes, even though most debris is rare

    .
  • Be gentle with plastic components, such as the dipstick and some covers, to avoid cracking

    .
  • When reinstalling bolts, use a torque wrench to avoid over-tightening and damaging aluminum threads or covers.
  • Always use a new filter and inspect the old one for any signs of unusual deposits (sludge, metal flakes) which may indicate engine problems.

Recommended Oil and Filter Intervals

  • Change oil every 7.5 hours of riding or every 1,000 kilometers (620 miles), whichever comes first

    .
  • Change the oil filter each time you change the oil.
  • Clean or inspect the strainer at least every other oil change.

Final Tips from MotoSport.com

  • Use only motorcycle-specific engine oil approved for wet-clutch systems.
  • Keep note of your oil change intervals and engine hours to maximize engine longevity.
  • Check for oil leaks after your first ride post-change.

With these steps, your 2019 Yamaha WR250F will stay lubricated and protected, ready for the next adventure on the trail or track.

Related Shopping Categories

Shop Motor Oil for a 2019 Yamaha WR250F Dirt Bike.

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Shop Oil Drain Pans for a 2019 Yamaha WR250F Dirt Bike.

Shop Tools for a 2019 Yamaha WR250F Dirt Bike.

Shop Oil Fillers and Drain Plugs for a 2019 Yamaha WR250F Dirt Bike.

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.