How to Change the Oil in a 2021 Yamaha XT250: Step-by-Step Guide

Shop parts for a 2021 Yamaha XT250 Dirt Bike.

Performing regular oil changes is essential to keep your 2021 Yamaha XT250 running smoothly and to maximize its performance & longevity. Below you'll find everything you need to know—tools, steps, and specific call-outs for your XT250—to ensure a quick and clean oil change. This MotoSport.com exclusive how-to is designed for riders who take their maintenance seriously and want factory-level results at home.

Tools and Supplies Needed

  • Socket wrench set (specifically 12mm for the drain bolt, and relevant sizes for oil filter cover bolts)
  • Torque wrench (for proper reinstallation torque specifications)
  • Oil catch pan
  • Funnel
  • New oil filter (OEM recommended)
  • New crush washer for drain bolt
  • Yamalube 10W-40 or Yamaha-recommended oil
  • Clean rags for cleanup
  • Gloves (optional, recommended)
  • Bike stand or suitable way to keep the bike upright and level

Model-Specific Call-Outs for the 2021 Yamaha XT250

  • Oil drain bolt requires a 12mm socket; torque to 15 ft-lb during reinstallation.
  • The oil filter cover uses two screws of different lengths; note their orientation when reinstalling: the long screw goes in the top right, the short in the top left.
  • Oil capacity changes depending on whether you change the filter:
    • If replacing oil filter: 1.37 quarts (1.3L)
    • If just the oil: 1.27 quarts (1.2L)
  • The XT250 is a wet clutch bike; use oils suitable for motorcycle wet clutches and avoid automotive oils with friction modifiers.
  • Make sure the bike is level when checking oil level via the sight glass. Leaning the bike will result in an inaccurate reading.

Step-by-Step Oil Change Instructions

  1. Warm Up Engine
    • Start your bike and let it run for several minutes. Warm oil drains quicker and more thoroughly.
  2. Turn Off Engine and Secure the Bike
    • Ensure the engine is off and the bike is positioned upright and stable (either use a stand or have someone help hold it level).
  3. Prepare Your Workspace
    • Put on gloves and place the oil catch pan underneath the drain bolt.
  4. Remove the Drain Bolt
    • Using a 12mm socket, loosen and remove the drain bolt from the bottom of the engine.
    • Allow all oil to fully drain into your pan.
    • Remove the old crush washer from the bolt.
  5. Remove and Replace Oil Filter
    • Locate the oil filter cover on the right side of the engine.
    • Remove the cover by taking out both screws. Remember, the long screw goes top right and short screw top left during reinstall.
    • Take out the old filter. Wipe the filter area clean with a rag.
    • Install the new oil filter, ensuring correct orientation as per the filter's instructions.
    • Reinstall the cover and screws; torque each screw to 7.2 ft-lb.
  6. Reinstall Drain Bolt
    • Install a new crush washer onto the drain bolt.
    • Tighten the bolt with your socket to 15 ft-lb of torque. Do not overtighten.
  7. Add New Oil
    • Remove the oil fill cap on the right side of the engine.
    • Insert a clean funnel and pour in 1.37 quarts (if filter changed), 1.27 quarts (if not) of Yamalube 10W-40 or equivalent.
  8. Check Oil Level
    • Replace the oil fill cap and start your engine. Let it idle for a few minutes to circulate the new oil.
    • Shut the engine off and wait a minute or two for oil to settle.
    • With the bike upright and level, look through the sight glass. The oil should be between the upper and lower marks.
    • If low, add small amounts until oil sits within recommended range.
  9. Final Checks
    • Check for leaks at the drain bolt and oil filter cover using a rag to ensure all is dry and tight.
    • Dispose of old oil and filter at a proper recycling center.

Owner Tips and Best Practices

  • Re-check oil level after your next ride. The new filter may absorb additional oil, requiring a top-off.
  • Keep records of every oil change for future reference and warranty purposes.
  • Always use OEM or high-quality aftermarket filters that match Yamaha’s specs.
  • Never overfill; too much oil can harm seals and engine performance.
  • Be aware: Some small oil drips during changes are normal but verify that all gaskets and bolts are dry after your ride.

Properly changing the oil in your 2021 Yamaha XT250 is a manageable DIY task that will keep your engine protected. Use only high-quality parts and lubricants, and follow each torque specification carefully for years of reliable riding. For more advice and exclusive how-tos, count on MotoSport.com—your authority for dirt bike parts, gear, and maintenance guidance.

Ride safe. If you have any doubts, always consult your Yamaha dealer or service professional.

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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.