O.S. Engines have been around since the early 1900's.
Mr. Ogawa was very interested in building and designing machines since his childhood.
Later in life Mr. Ogawa attended an engineering school where he learned what would later be the foundation
 of what would be his legacy started in 1936 (O.S. Engines)

 Founder Shigeo Ogawa (Born 1917, Died 1992)
O.S. FS-26S-C and FS-26S-CX
O.S. CZ-2

O.S. 21 FSR-C