FORCE : 50 H.P. (1988) Model Serial Ranges 504H8C 504H8D 504S8C 504S8D 507D8C 507D8D 507F8B 507F8C 507F8D 507H8C 507H8D 507I8C 507I8D 507L8B 507L8C 507L8D 507N8B 507N8C 507N8D 507R8C 507R8D 507S8C 507S8D 507T8B 507T8C 507T8D 507V8C 507V8D 507X8B 507X8C 507X8D 507Y8A 507Y8B 507Y8C 507Y8D 508M8B 508M8C 508M8D 508V8D 0C507F8B 0C507F8C 0C507F8D