Using the Swagbucks toolbar, I would first search 'Farmall tractors'. From there I would choose an option and do a search for 'repairs'
You could find a farmall tractor for sale at an online retailer called tractorhouse.com which sells used and new tractors and they have a wide selection of tractors to chose from. tractorhouse.com
The best place to find Farmall tractor parts, no matter where one's location is, is online through various websites. Sites one could use are eBay, Yesterdays Tractors and Country Tractor Parts.
One can find Farmall tractors for sale on eBay which has different deals on these products from different locations. One can also find the tractors on a website called USFarmer.
There are a number of websites which specialize in tractor parts. Farmallparts.com,FarmallTractorParts.com/ and tractorparts.com are three sites. There are also several communities on the web of people with interest in old tractors. The forums on these sites are great places to look for advice and help. You can find links, resources and parts stores for all things Farmall at the website www.farmalltractors.org. If it is an antique tractor, try searching forums about antique Farmalls to find parts that other online members may have,
A vintage red Farmall is not easy to find, someone has to do some digging to find it. Checking auction sites like eBay regularly is a good idea. Craigslist should also be looked at.
Farmall tractor parts can be found at speciality spares parts dealers focused in agricultural and industrial machinery; If you are looking for a bargain its always a good idea to have a look in on-line market places such eBay or Amazon also is common to find classifieds in blogs dedicated to agricultural machines and tractors.
There are many places one might find a tractor repair company. In addition to checking the local White Pages business listing, one might also refer to the classifieds.
You can find reliable, unbiased information about this tractor model on Wikipedia. Go to en.wikipedia.org/wiki/Farmall to research everything about International 656 tractors, including history and current happenings.
Things like that are a little hard to find for a 30 year old tractor.
You didn't mention what model tractor, but there are many places online that sell manuals for tractors of this age. Search for "tractor repair manual ford 1964" and you will find them.
You should be able to get ahold of Farmall and they should have records. Although I am not for sure.
Someone looking for information about tractor parts can find them online or at some stores. Stores like Farm and Tracker would be knowledgeable about tractor parts. Also, checking online for tractor parts one needs would be helpful.