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the mix for a mac 3 a is 25/1 rotio.
The fuel mix is 24:1
fuel mix for a 1972 ted wiliams 7.5 hp outboard motor
50:1
50 to 1
50;1
99% of the outboard motors need 50:1
the right mix is 50:1
1:50
50 to 1
2% fullsuntetic oil
50:1