Kent 435 Posted July 3, 2001 just bought a decent a/c 620 with 380 original hours from 1 owner. the gentleman was elderly and could not remember what year he purchased it. was used on 10 acres for mowing only. it is hydro with a 72"deck, rear pto, 3 point, all original, motor was gone thru this spring. s/n 3031207 any help woud be appreciated also looking for owner's manual. joel Share this post Link to post Share on other sites
Kent 435 Posted July 3, 2001 Looks like it was made in 1974 or 1975, according to the Cross-Reference info... Can't tell ya anything more definitive... If it had a Briggs motor, we could date that, but I don't have a clue about Onans.... You should be able to get manuals from dealers or directly from Simplicity's pubs department at phone # (262) 284-8519. Share this post Link to post Share on other sites