1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 615Get this manual
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2 TighlenI:il ln ri ng taineto dri ve haft ous in with he ad scre ws and la washe rs orqu crews to 30 flo Ibo( .14m kg) nd ben la was he rs OT E: On 1.33: dn ue with 35 spira gear and right h.and drit