| Engine Model | Engine Type |
| FB460V | 1-cyl vert. Air cooled |
| FC150V | 1-cyl vert. Air cooled |
| FC290V | 1-cyl vert. Air cooled |
| FC400V | 1-cyl vert. Air cooled |
| FC401V | 1-cyl vert. Air cooled |
| FC420V | 1-cyl vert. Air cooled |
| FC540V | 1-cyl vert. Air cooled |
| FD440V | 2-cyl vert. Air-cooled |
| FD501V | 2-cyl vert. Air-cooled |
| FD590V | 2-cyl vert. Air-cooled |
| FD611V | 2-cyl vert. Air-cooled |
| FD680V | 2-cyl vert. Air-cooled |
| FD731V | 2-cyl vert. Air-cooled |
| FD501D | 2-cyl horiz. Liquid-cooled |
| FD620D | 2-cyl horiz. Liquid-cooled |
| FD661D | 2-cyl horiz. Liquid-cooled |
| FD671D | 2-cyl horiz. Liquid-cooled |
| FD711D | 2-cyl horiz. Liquid-cooled |
| FD750D | 2-cyl horiz. Liquid-cooled |
| FD791D | 2-cyl horiz. Liquid-cooled |
| FE120D | 1-cyl horiz. Air cooled |
| FE170D | 1-cyl horiz. Air cooled |
| FE250D | 1-cyl horiz. Air cooled |
| FE290D | 1-cyl horiz. Air cooled |
| FE350D | 1-cyl horiz. Air cooled |
| FE400D | 1-cyl horiz. Air cooled |
| FH381V | 2-cyl vert. Air-cooled |
| FH430V | 2-cyl vert. Air-cooled |
| FH451V | 2-cyl vert. Air-cooled |
| FH500V | 2-cyl vert. Air-cooled |
| FH531V | 2-cyl vert. Air-cooled |
| FH541V | 2-cyl vert. Air-cooled |
| FH580V | 2-cyl vert. Air-cooled |
| FH601V | 2-cyl vert. Air-cooled |
| FH641V | 2-cyl vert. Air-cooled |
| FH680V | 2-cyl vert. Air-cooled |
| FH721V | 2-cyl vert. Air-cooled |
| FH601D | 2-cyl horiz. Air-cooled |
| FH641D | 2-cyl horiz. Air-cooled |
| FH680D | 2-cyl horiz. Air-cooled |
| FH721D | 2-cyl horiz. Air-cooled |
| FJ100D | 1-cyl horiz. Air cooled |
| FJ180V | 1-cyl vert. Air cooled |