Owners manual can be found here: Riage X3: infinitymassagechairs.com/content/docs/manuals/Riage_X3_Manual.pdf Riage: infinitymassagechairs.com/content/docs/manuals/Riage_3_Manual.pdf If you have questions about assembling this chair, please call (603) 910-5000, and press the extension number for Tech Support, where one of our tech representatives will gladly assist you over the phone.