Help Identify Motor

ALARVR

Cadet
Joined
Jun 1, 2010
Messages
7
I need help identifying motor. All plates are missing. The following are the only numbers I can find without taking things apart. the cowling says "Yamaha 70 Precision Blend"

On the plate between the trim hydraulics:

"6H1-15" is forged in
"7B-1088" is below it stamped in the metal

There is a recessed circle about the size of a dime in the block on the starboard side behind the carbs. that says "90207"

all over the engine there is forged in "6H30 4" "6H30 5" "6H30 0" followed by a "Y-1"

There are no other plates/numbers. I havent taken anything off to find the freeze plugs, I read another post where the serial # will be stamped in the plugs.

Any help is appreciated, I am ready to start working on it.
 
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