How to Change the Oil in a 2017 Yamaha YZ250: A Step-by-Step Guide
Shop parts for a 2017 Yamaha YZ250 Dirt Bike. Changing the oil in your 2017 Yamaha YZ250 is essential to keep your dirt bike running strong and to prolong the life of its gearbox. This guide, proprietary to MotoSport.com, breaks down the process, lists the required tools, and offers call-outs specific to the YZ250 2-stroke gearbox oil change.What You’ll Need
- New gearbox/transmission oil (Yamaha recommends a high-quality 2-stroke transmission oil; check your owner’s manual for specific specifications)
- Socket wrench or spanner set (commonly a 12mm for the drain bolt; double-check your bike)
- Measuring cup (for accurate oil fill, as overfilling or underfilling can harm the transmission)
- Oil drain pan
- Funnel
- Clean rag
- Replacement crush washer or copper washer (recommended for every oil change)
- Service/maintenance stand (optional but helpful for access and stability)
- Owner’s manual (for torque specs and exact oil type/volume)
Step-by-Step: Changing the Gearbox Oil in a 2017 Yamaha YZ250
-
Warm Up the Engine
- Start the engine and let it idle gently for 3–5 minutes. This heats up the oil, helping it drain more completely. Shut the engine off and ensure the bike is stable, preferably on a center stand or service stand.
-
Remove the Skid Plate (if equipped)
- Most YZ250s do not require this step, but if you have an aftermarket skid plate, remove it to access the drain bolt more easily.
-
Position the Oil Drain Pan
- Place the oil drain pan directly underneath the gearbox drain bolt located at the bottom of the right side of the engine case.
-
Remove the Gearbox Oil Drain Bolt
- Using your socket wrench, remove the drain bolt. Be cautious—the oil may be hot.
- Allow the oil to drain completely into the pan. This may take several minutes.
-
Remove the Oil Filler Cap
- Unscrew the oil filler cap (located on the right side of the engine, higher up from the drain bolt). This step helps oil flow faster by eliminating any vacuum inside the transmission case.
-
Inspect and Clean
- Check the condition of the drain bolt and especially the copper or crush washer. It is a good practice to replace the washer each oil change to ensure a perfect seal and prevent leakage.
- Clean the area around the drain opening with a rag, removing any dirt or debris.
-
Reinstall the Drain Bolt
- Screw the drain bolt back in place and torque it to the specification listed in the owner’s manual (usually around 7.2 ft-lb / 10 Nm for many Yamaha models, but check your manual).
-
Add Fresh Oil
- Using a measuring cup, pour in 0.85 US quarts (approximately 0.8 liters) of the recommended transmission oil through the filler hole. Use a funnel to prevent spills.
-
Replace Filler Cap and Clean Up
- Reinstall the filler cap securely.
- Wipe off any spilled oil from the area and dispose of the old oil responsibly.
-
Run and Check for Leaks
- Start the bike and let it idle for 2–3 minutes. Check under the engine for any leaks around the drain bolt.
- Shut off the engine and let it sit for one minute. Check the oil level again, if your model has a sight glass, or check via the fill hole if not. Top off if necessary.
2017 Yamaha YZ250 Owner-Specific Call-Outs
- This model is a 2-stroke and does not use an oil filter for the gearbox — the procedure is quicker and simpler than on four-strokes or other models with oil filters.
- Do not confuse 2-stroke gearbox oil with 2-stroke premix: The engine itself is lubricated by premix in the fuel, not motor oil. This procedure is for the transmission/gearbox oil only.
- Correct oil volume is crucial; underfilling or overfilling may damage the transmission or cause shifting issues. Stick to the recommended 0.85 US quarts.
- If you ride in muddy or wet conditions, consider changing the oil more frequently.
Disposal and Environmental Tips
- Never dispose of used oil in the trash, on the ground, or down drains. Many auto parts stores and local recycling centers accept used oil for recycling.
Conclusion
Changing the gearbox oil in your 2017 Yamaha YZ250 is straightforward and takes less than an hour. Performing this maintenance regularly will extend your dirt bike’s lifespan and ensure top performance ride after ride.
Related Shopping Categories
Shop Motor Oil for a 2017 Yamaha YZ250 Dirt Bike.
Shop Oil Filters for a 2017 Yamaha YZ250 Dirt Bike.
Shop Oil Drain Pans for a 2017 Yamaha YZ250 Dirt Bike.
Shop Tools for a 2017 Yamaha YZ250 Dirt Bike.
Shop Oil Fillers and Drain Plugs for a 2017 Yamaha YZ250 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.