I bet you're wondering how mechanically inclined you need to be in order to assemble your massage chair... In my opinion, you really don't need to be all that mechanical and you definitely do not need to be an engineer. :) We have many different installation videos for our chairs posted on each product page and our youtube channel.
Tips to make your installation go smoothly:
Have more than one person on-site to assist with assembly.
Dolly (or 2 if your chair is one of our heavier models). You can get the big box onto a dolly and then roll it into your desired location.
Flashlight (to see into the tight areas--sometimes we've found that attaching the armrests especially if there are more than one air hose and electrical connections can be tricky without extra light and an extra set of hands.
You'll find that moving the boxes into the desired location and disposing of all of the packaging to be one of the most taxing parts of assembling your chair. You should be able to get the chair together pretty quickly.