Here is the complete Mark IV 912 Rotax  installation Manual Section IV Chapters 1-7 from Avid dated 11/2/1992.  These are in the tiff format. Sect IV Ch 1.tiff Sect IV Ch2.tiff Sect IV Ch3.tiff Sect IV Ch4.tiff Sect IV Ch5.tiff Sect IV Ch6.tiff Sect IV Ch7.tiff I just found out that on my IPad only the first page is visible so if that is the case for you then try it on a computer.