How do you add oil to john deere L120 transmission?

To add oil to the transmission of a JOHN DEERe L120, first ensure the mower is on a level surface and the engine is off. Locate the transmission dipstick or fill cap, usually found near the rear of the mower. Remove it, then use a funnel to add the appropriate type of Transmission Fluid until it reaches the recommended level on the dipstick. Finally, replace the dipstick or fill cap securely before starting the mower.