1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 475Get this manual
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TORSIONAL DAMPER REMOVAL
Figure Removin Torsional Damper J
0 Tool -6978 con cains hole orming palternsa :'-boll and 3-bo ll patternHo le for the 2-boll paltern mus be longated for t