Well that really depends upon which page of the documentation one reads. I no longer trust my 50+ yr old memory (which had remembered a 120# limit), so I had the kids look up the max weight to remind us of our goal. They brought me our notebook open to what I now realize was "FIRST Guidelines, Tips and Good Practices", page 5 of 38, wherein under 1.2 ROBOT Mechanincal 1.2.1 sub 1 it says "The robot weith limit is 130 pounds..."
We weighed our machine the other day, and were at 120, so we went on our merry way adding a hood, fan, etc. This AM I was tripping through the
rules 
and see that under ROBOT, 5.3.2.1 <R08> says "...max allowed weight ...is 120 pounds". Page 8 of 29.
I guess the good part of this is that my memory isn't totally gone, but we put this thing in a crate yesteday, instead of drilling holes in frames etc. Needless to say, this is a bit frustrating - we coulda been drillin' holes instead of makin' extra parts.
Will probably uncrate and drill drill drill, but may ask for a waiver since were given conflicting info.
While I am at it, the timeline graphic on p 8 of 29 hopefully has some incorrect dates - since Feb 21 is not be a Thurs this year. What are the correct dates???