Here is a service manual, not the "owners" manual you requested...thanks to Don..........
http://www.4shared.com/account/file/74506321/9da18d5d/7743372_Engine_Manual_50-57.html
If you want the owners manual contact your boat manufacturer.
Bill
That's the wrong manual, that's for newer Chevy engines.
Here is the one for the NC Ford EFI Diagnostic
http://www.4shared.com/account/file/104993284/c34b9668/7788882_NC_Ford_MFI_Dia.html
And one for the NC outdrive
http://www.4shared.com/account/file/90767556/d3f8f764/7788881_NC_SX_DPS_Drive.html
I have yet to uploaded an engine manual for the Fords.