1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 209Get this manual
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Page Ignit ion Sy"tem Descript ion Components coution" Breaker Point Ignition MerCrui set and 6-Cylinder Engines
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.3B-3 .3B-3 .36-3 .36-4
.36-5 .36-5 3B5
.3B