Inboard Motors Mercury Mercruiser 1964-1991 service manual, Page 94Get this manual

Inboard Motors Mercury Mercruiser 1964-1991 service manual, Page 94

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R the sprocket and the timing togetherIf the crankshaft sprocket is to be replaced, remove the sprocket using Tool J-5825 on small block engine .1- 1619 on big block enginenstall two 51