1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 644Get this manual
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DISASSEMBL Y REMOV ING DRIVI NG GEAR and UNIV ERSAL JO!NT
2 Remove back cover to expose bea ring retaineth re move re taine 'ith "0" rin Remove bearin up an shims with lid I-Iammer Pu ll