Try the Simplicity website below. If that doesn't work call them directly with all of the correct model numbers at hand and I'm sure they will help you. http://www.simplicitymfg.com/manuals/

Years ago--Allis-Chalmers was a good machine, as was Simplicity. BUT!! Most of the modern machines bearing those older names, are now made to the new standards and designs (Make 'em cheap-use the old tried and true names!) And, a lot are made by MTD, a name that is not well received by us older folks, with long associations with those names, when they meant quality and long years of service. Oh, i suppose MTD machines will usually last 6-7 years, more or less, but, before you buy one with the old names on them--better check the MFGRS. tag or sticker, to see who really made it.

Hey! New here.. but had to post.. Read your msg & lots of the posts.. very informative. I just had to comment... we have similar as u.. acres with about 2 we mow (after minus pond etc). Hubby is gone alot & we needed reliable & EASY since I'll be doing most of mowing. Plus JD has an excellent rep here for service/etc & this came w/4 yr warranty (dont know what others have)which didnt decide it but is nice. We just got the JD 304... I'm in LOVE!! It is awesome! I was scared at first but.. WOW sooo easy to use! I still cant get over the '4-wheel turn'.. Im just super impressed! Hubby wanted a zero-turn but I was .. scared of them lol! I researched -found the 304 being rated top.. I thought kinda what we both wanted (tight turn w/steering wheel). Even though it's like a reg mower, that thing turns SHARP (never driven zeroturn but.. cant imagine a major diff unless u wanna .. spin in place lol!) I normally wont even mow ditches or hills but.. will now! It's great.. actually found it.. far exceeding our expectations! DEFINITELY worth paying a few hundred extra for! I keep thinkin.. hmm.. Im female.. dont think Im supposed to 'be in LUV' w/a Mower but.. XOXOX!! Heck, I felt guilty thinkin.. I shouldnt be having so much fun 'working' u know lol!! As far as the teens, they'd have np... my 14 yr old daughter is gonna learn.. she's responsible & I'd be very comfortable w/her using this.. sure most have em but great safety features & superb ease of use! Trust me - if I could learn in mins...anyone could! I know everyone is different w/diff opinions but.. just had to let you know.. Our JD 304 ROCKS!! Neighbors drove it.. (they have JD.. older think 345.. they wanna trade it in now hehe!). Well, good luck with all! I know for us it was a big decision & purchase with much research beforehand. My nerves/doubts were quickly put to rest by JD 304.. Heck just talking about it makes me wanna go mow :( sigh... LOL!! Let me/ev1 know what yall decide!! Good Luck Again!! PS No I dont work for JD or get commission LOL!! ; )

Castoff: I had some simplicity info stored on my computer as I had looked at simplicity tractors before my recent cub cadet purchase. The Allis-agco name was used between 1991 and 2002. As best as I can determine from the simplicity serial numbers Allis-Agco produced the A-A 514H and corresponding simplicity regent models 514H and 2514H between 1997 and 1999. I cannot verify earlier or later production. Maybe someone else can. Interestingly The simplicity came with the briggs vanguard and also with a kohler version. As to value check on line. Anywhere from $400 to $1000.