These are some common tools used to work on this device. You might not need every tool for every procedure.
Before attempting any repairs, check out the troubleshooting page.
Background and Identification
The Lenovo Yoga 2 Pro is a hybrid laptop/tablet with a 360 degree range of screen motion. It was released October 2013, and has since been replaced with the Yoga 3 Pro. You can differentiate between the Yoga 2 and the Yoga 3 by the hinge on the inside-- the Yoga 2 has a long bar the color of the outside case between two main hinges, and the Yoga 3 has a series of smaller hinges and bars.
The Yoga 2 Pro comes standard with a 4th Gen Intel® Core™ i7 or i5 Processor, operating on Windows 8.1, with 8 GB of RAM, and 512 GB SSD. It's extremely lightweight, at only 3.1 pounds, and, at only .6 inches thick, it's very portable. A single battery charge lasts up to nine hours, and can last six hours even while streaming HD video continuously on its 13.3 inch QHD+ display.
For Lenovo's support page, click here. [Lenovo has announced forthcoming discontinuance of support for the Yoga 2 Pro.]
For the full user guide as a downloadable .pdf, click here. [There is a link on this page to get the Hardware Maintenance Manual as well.]
For more information on the Yoga 2 Pro, as well as additional references, check out the wikipedia page here.