The original model of John Deere 350 bulldozer and crawler with 72" blade is listed at 9,140 lbs for the gasoline-powered version and 9,210 lbs for the diesel version. There are several newer models available, such as the 350B, 350C and 350D, and each of these have different weights.
Models 350B and 350C have a weight of 10,600 lbs, while the 350D weighs 10,700 lbs, according to the spec sheets available on the company's website. The original John Deere 350 spec sheet also provides for a 90" blade option which would increase the overall weight by 125 lbs. All weights listed shown are approximate.