Welcome to Satoh-S650G.com!
The starting point for information on the Satoh S650G "Bison" Tractor. Here you will find a centralized collection of part numbers, information, and many helpful links to websites, forums, service centers, online stores, and parts sources.
We now have a PDF Satoh Repair Manual Online!
Satoh S650G Bison History:
The U.S. Version of the S650G Bison was originally manufactured by Satoh Agricultural Machine Mfg. Inc. in Tokyo, Japan and was produced from 1973 to 1983 for the United States. In Japan the 650G model tractor dates back to the early 1960's. In February of 1980, Satoh merged with Mitsubishi leading to changes in the tractor and model line. Remaining U.S. Satoh inventory was relabeled as Mitsubishi and some Satoh models were rebranded as "Satoh by Mitsubishi". Sales of the S650G ended in 1983. In its lifetime the S650G Bison was produced with one of two gasoline Mazda engines: a 25HP 4 cylinder PB 100 987cc engine or a larger 27HP 4 cylinder TA/TB 1169cc engine. After the 1980 merge the core drive train became all Mitsubishi and primarily diesel. The Satoh S650G Bison was offered as 2wd only.
All US-spec Satoh tractor models began with an "S" with a three digit model number and an animal name, hence the Satoh S 650G Bison. Non US-spec Satoh tractor models began with an "ST" which stood for Satoh Tractor, in the US these ST models are what is known as Grey Market tractors and will share some similarities to the US models but may have harder to find parts.
Many Satoh S-650G Bison tractors as still running as strong as ever because their high quality design built on Satoh's vast experience and research giving this tractor outstanding performance and a high efficiency that owners love. This site is dedicated to properly maintaining and repairing this versatile and useful tractor long into the future.
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