Cletuspsc
ArboristSite Operative
That's a nice machine and good in snow with the narrow tires. They also made a 330 and 340D. Can't find any specs on them, but it would be a great machine.
JD produced them for a short time in the early 80's.
Gypo
A 340D is the same basic machine as a 440C less the blade and they came standard with the 16.9x30 tires insted of the 18.4x26 or 23.1x26 with the 440's