1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 568Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 568

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Shimming ToulsDri'cn Gar)

It is sug ested that drive shaft bearing pr load be rechecketf after any chang in shimming which aH amount of gear lash
Figure 15, MerCrui ser 160- 165 Gea