How to Change the Oil in a 2019 Yamaha YZ450F: A MotoSport.com Proprietary Guide
Shop parts for a 2019 Yamaha YZ450F Dirt Bike.
Keeping up with routine oil changes is crucial to the performance and longevity of your 2019 Yamaha YZ450F. This guide provides a step-by-step process tailored specifically for this model, along with essential tools and important call-outs Yamaha owners should know. Regular oil changes not only keep your bike running smoothly but help prevent premature engine wear and costly repairs.
Tools & Supplies Needed
- Fresh engine oil (Yamaha recommends a high-quality synthetic 10W-40 or 10W-50 motor oil–verify the latest specs in your owner's manual)
- New oil filter
- Oil drain pan
- Socket wrench & appropriate socket sizes (typically 12mm and 8mm, but check your specific bolts)
- New drain plug washer/crush washer (recommended for each oil change)
- Funnel
- Gloves
- Shop rags or paper towels
- Torque wrench (to tighten bolts to factory specification)
- Optional: Skid plate removal tool (if applicable)
Step-by-Step Oil Change Instructions
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Warm Up the Engine
- Start the YZ450F and let it idle gently for 2–3 minutes. This thins the oil for faster, more complete draining.
- Always perform this step in a well-ventilated area to avoid inhaling exhaust fumes.
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Stabilize the Bike
- Turn off the engine and securely position the bike on a stand to keep it upright and stable.
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Remove the Skid Plate (if equipped)
- If your 2019 YZ450F has a skid plate, use the required tools to detach it, allowing access to the drain bolts and oil filter.
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Drain the Engine Oil
- Place the oil pan beneath the bike. Locate the main oil drain bolt on the bottom of the crankcase.
- With the socket wrench, carefully remove the drain bolt and crush washer. Allow the oil to drain completely.
- Model-Specific Call-out: The 2019 YZ450F uses a dry-sump lubrication system, so you will also need to drain the oil tank (located behind the cylinder head) as well as the crankcase.
- Remove the oil tank plug (check your manual for the exact location). Drain both the crankcase and oil tank fully for a complete oil change.
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Remove and Replace the Oil Filter
- The oil filter is normally located on the right side of the engine, housed behind a small cover secured by bolts.
- Use your socket to remove the bolts and the cover. Carefully pull out the old oil filter (note its orientation as you remove it).
- Use a clean rag to wipe any residual oil or debris from the oil filter chamber.
- Install the new oil filter, ensuring it is oriented correctly (refer to prior position or your owner's manual).
- Reinstall the cover and torque bolts to the manufacturer's recommendation.
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Install New Crush Washer and Refit Drain Bolts
- Replace the old crush washer with a new one on the drain bolt (this helps prevent leaks).
- Thread both the crankcase and tank drain bolts by hand first to avoid cross-threading.
- Use a torque wrench to tighten each bolt to factory specifications (See specification chart in your owner's manual—typically around 18 ft-lbs for drain bolts).
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Add Fresh Oil
- Remove the oil filler cap and position a funnel in the opening.
- Pour new engine oil up to the specified quantity for the 2019 YZ450F. Yamaha specifies approximately 1.05 liters (1.11 US qt) when changing oil and filter—always verify on your dipstick or sight glass afterward.
- Reinstall and tighten the oil filler cap.
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Final Checks and Reassembly
- Start the bike and let it idle for approximately 60 seconds. Shut off and wait 1–2 minutes for the oil to settle.
- Check for leaks around the drain bolt(s) and filter cover.
- Check the oil level via the sight glass or dipstick and top off if necessary to stay within the recommended range.
- If removed earlier, reinstall the skid plate securely.
Special 2019 YZ450F Oil Change Tips
- Always use a new crush washer on the drain bolt; reusing the old one risks leaks.
- Don't overfill. Overfilling can cause excess pressure and leaks. Always check the level after running the engine and letting the oil settle.
- Oil filter orientation matters. Note the direction the old filter comes out and match it with the new one.
- Keep records. Log your maintenance with date and engine hours to catch issues early.
- For best results and longevity, always use oils and filters that meet Yamaha's requirements and high-performance standards.
Proprietary MotoSport.com Resources
For genuine Yamaha or approved aftermarket parts, as well as additional tools specifically designed for the 2019 YZ450F, visit MotoSport.com's selection for YZ450F oil change kits, tools, and lubricants.
Important Owner Call-Outs
- The 2019 YZ450F features a dry sump lubrication system with a separate tank, unlike some older or smaller bikes which may be wet sump only. Make sure you drain both the crankcase and the tank for a thorough oil change.
- If you ride in especially muddy or dusty conditions or race frequently, it may be wise to change oil and filters more often than Yamaha's recommended service intervals.
Regular and proper oil changes are the cornerstone of a strong-running, reliable Yamaha YZ450F. Trust MotoSport.com for expert DIY tips and the best parts selection anywhere.
Related Shopping Categories
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Shop Oil Fillers and Drain Plugs for a 2019 Yamaha YZ450F 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.