Here is a detailed process on how to change transmission oil on your ATV:
1. Park your ATV on a level surface and turn off the engine.
2. Allow the engine to cool down completely.
3. Locate the transmission oil drain plug on the bottom of the ATV, slightly behind the front sprocket.
4. Place an oil pan beneath the drain plug.
5. Use a 17mm wrench to loosen the drain plug.
6. Allow the transmission oil to drain completely into the oil pan.
7. Once all of the oil has drained, replace the drain plug and tighten it securely with a wrench.
8. Locate the transmission oil fill hole. It's usually on the top of the engine, near the front of the ATV.
9. Use a funnel to add new transmission oil to the ATV, following the manufacturer's recommendations for the correct amount and type of oil.
10. Use the dipstick in the transmission oil fill hole to check the oil level. The oil level should be between the full and add marks on the dipstick.