I haven't found any other numbers. But When I look at the 15HO number on top of the block it almost looks like someone tried to stamp a 1 in between the one and the 5 but only half of it showed up. However, there is no space between the 1 and the 5 as if there was suppose to be another number there. I still wonder if it shouldn't say 115HO because that would make more sense. I can find information on a 115 HP High Output.
Last edited by Garthoc; 06-29-2011 at 08:50 PM.
Reason: Mispelled 15HO
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