I have an old antique Mercury 25 HP Twin motor that looks exactly like a Mark 28 Super Hurricane, but my serial number does not co-incide with the numbers for a Mark 28. My serial number is: 1498212. Mine has the "automatic" transmission just like the Mark 28 and mine also says "Super Hurricane" cast into the block. I have never removed the lower unit from one of these motors but I need to to put in a new impeller. Is there anything different about removing the lower unit from say the mid "60's" motors?
I was wandering about the little linkage on the exaust (driveshaft) housing, does it have to be loosened? I am missing the cover on this linkage too and
I need to find one. Any help greatly appreciated as I have no manuals going back past serial numbers 159XXXX.:redface:
I was wandering about the little linkage on the exaust (driveshaft) housing, does it have to be loosened? I am missing the cover on this linkage too and
I need to find one. Any help greatly appreciated as I have no manuals going back past serial numbers 159XXXX.:redface: