The weights are easy to move around so I switched them to the rear axle because common sense tells me that it's for lifting more weight. However, while backing it off the trailer it was VERY noticeable that it wanted to tip backwards more than it ever has so as mentioned having them on the front...
Have a 1994 Bobcat 7753 with what I think are four (4) counterbalance weights bolted to the front axle (2 per side). In addition there is 3 steel plates bolted to the inside of the rear door.
Have owned this machine since new and do not recall who, how, or when they were installed. Never gave...