How to Change the Oil in a 2017 Yamaha YZ450FX

Shop parts for a 2017 Yamaha YZ450FX Dirt Bike.

Keeping your 2017 Yamaha YZ450FX in top shape starts with regular oil changes. Fresh engine oil ensures optimal performance and longevity, especially for high-performance dirt bikes like the YZ450FX. This step-by-step guide will walk you through the entire process, list every tool required, and highlight key call-outs specific to your model. Get ready to tackle one of the most essential maintenance tasks with confidence.

Tools and Supplies You Will Need

  • Socket wrench set (with 12mm socket for drain bolt)
  • Torque wrench
  • Drain pan
  • Oil filter (HF140 is recommended for the 2017 YZ450FX)
  • New engine oil (BelRay EXS 10W50 or Yamalube 10W-40; capacity: ~0.7 liters)
  • Replacement drain bolt washer (crush washer)
  • Funnel
  • Clean rags
  • Nitrile gloves (optional, keeps your hands clean)
  • Screwdriver (if removing a skid plate)

Step-By-Step Oil Change Instructions

  1. Warm the Engine
    • Start the engine and let it idle for 2-3 minutes. This allows the oil to warm up, thin out, and drain more efficiently.
    • Shut off the engine before proceeding.
  2. Position the Bike and Prepare
    • Place your YZ450FX on a stand so it is upright and supported.
    • If you have a skid plate, remove it for better access to the drain plug and filter.
    • Ensure the area is well-ventilated and you have your supplies ready.
  3. Drain the Old Oil
    • Position the oil drain pan beneath the engine's drain bolt.
    • Remove the oil filler cap (on the clutch cover) to help oil flow out smoothly.
    • Using a 12mm socket, carefully remove the drain bolt and washer. Allow the oil to fully drain into the pan.
    • Be cautious—the oil could be hot.
  4. Remove and Replace the Oil Filter
    • Locate the oil filter cover on the right side of the engine.
    • Loosen and remove the filter cover bolts using the correct socket or Allen tool.
    • Gently remove the cover. The oil filter may come out with it, or you may need to pull the filter out separately.
    • Inspect the cover's O-ring for nicks or wear. Replace if necessary.
    • Install the new filter (HF140 is strongly recommended) with the correct orientation. On the 2017 YZ450FX, the rubber seal faces outward, toward the cover. Call-out: Installing the filter backward can cause catastrophic engine damage. Double-check orientation.
    • Replace the cover and tighten bolts to factory spec. (Always check your owner's manual for precise torque values.)
  5. Replace the Drain Bolt and Washer
    • Install a new crush washer on the drain bolt if available. Yamaha highly recommends replacing the washer at every oil change to prevent leaks.
    • Reinstall and hand-tighten the drain bolt, then torque to specification (usually around 12 ft-lbs; verify in your owner's manual).
  6. Refill with Fresh Oil
    • Use a funnel to add approximately 0.70 liters of fresh oil (BelRay EXS 10W50, Yamalube 10W-40, or your manufacturer's recommended oil).
    • Reinstall the oil filler cap.
  7. Start and Check for Leaks
    • Start the engine and let it idle for 1-2 minutes. Check for leaks at the drain bolt and oil filter cover.
    • Shut the bike off and let it rest for a minute, then check the oil level with the dipstick or sight glass. Add oil if necessary to bring it to the correct level.
  8. Dispose of Old Oil Properly
    • Take used oil and filters to a recycling center or auto parts store that accepts them.

Yamaha YZ450FX (2017) Specific Call-Outs

  • Oil Filter Orientation: The 2017 YZ450FX uses the HF140 oil filter. Incorrect installation can starve the engine of oil—ensure the filter's rubber seal faces outward (toward the cover) before reassembly.
  • Oil Capacity: The engine requires approximately 0.7 liters (700 ml) of oil for a change with filter replacement. Overfilling can cause engine trouble–always measure carefully.
  • Washer Replacement: Yamaha recommends replacing the drain bolt washer with every oil change to avoid leaks.
  • O-Ring Condition: Inspect the O-ring on the oil filter cover every time. Failure to replace a damaged O-ring can lead to leaks and oil loss.
  • Skid Plate: If your bike is fitted with an aftermarket skid plate, removal may be necessary for drain bolt access.

Final Checklist

  • Drain bolt tightened, new washer installed
  • Oil filter replaced, correct orientation, O-ring checked
  • Oil level checked and topped off if needed
  • Engine run and checked for leaks
  • All tools accounted for, rag up spills
  • Used oil and filter disposed of responsibly

Changing the oil on your 2017 Yamaha YZ450FX is a straightforward way to extend your bike's life and boost performance. Always refer to your owner's manual for torque specifications and intervals tailored to your riding style.

This proprietary guide brought to you by MotoSport.com—your trusted source for Yamaha maintenance parts and expert tips.

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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.