| Engine Model | Minimum Compression ( psi ) |
| FB460V | 43 |
| FC150V | 50 |
| FC290V | 71 |
| FC400V | 71 |
| FC401V | 71 |
| FC420V | 71 |
| FC540V | 71 |
| FD440V | 170 |
| FD501V | 170 |
| FD590V | 170 |
| FD611V | 170 |
| FD680V | 99 |
| FD731V | 99 |
| FD501D | 170 |
| FD620D | 170 |
| FD661D | 170 |
| FD671D | ? |
| FD711D | ? |
| FD750D | ? |
| FD791D | ? |
| FE120D | 42 with recoil starter / 57 with electric starter |
| FE170D | 42 with recoil starter / 57 with electric starter |
| FE250D | 42 with recoil starter / 57 with electric starter |
| FE290D | 42 with recoil starter / 57 with electric starter |
| FE350D | 42 with recoil starter / 57 with electric starter |
| FE400D | 42 with recoil starter / 57 with electric starter |
| FH381V | 57 |
| FH430V | 57 |
| FH451V | 57 |
| FH500V | 57 |
| FH531V | 57 |
| FH541V | 57 |
| FH580V | 57 |
| FH601V | 57 |
| FH641V | 57 |
| FH680V | 57 |
| FH721V | 57 |
| FH601D | 57 |
| FH641D | 57 |
| FH680D | 57 |
| FH721D | 57 |
| FJ100D | 29 |
| FJ180V | 28.4 |