Hi there Lt05,
Thank you for your question. Normally, you would want to install the lift rod in the Delta Porter Lavatory 25984LF-OB-ECO faucet before installing it on the sink. However, if the faucet is already installed on the sink, we would advised inserting it into the lift rod hole on the back of the faucet and work it into the unit until if falls down below the sink.
Date published: 2018-07-29