According to the 3520 Op Manual the cab version is 3570 lbs. Add for loader (900) and brush hog (600) to get total lbs (5070).Is it a cab or os ? open station should be around 4400 lbs 2900 tractor 900 loader and about 600 brush hog
http://www.tractorbynet.com/forums/john-deere-owning-operating/136054-3320-weigh.html
I did this post a while back for my 3320. Same tractor as yours but a smaller engine. The weights are with loaded tires. I hope this helps.
Dan
Actually the 3320 has a slightly larger engine than the 3520 and 3720.
Nuru, you beat me to it.
Matt![]()