1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 905Get this manual
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Model (E ngine Horsepower)
55-61 55-61
17' -19' 16'-18' 19' -2117' -19' 20' -25' 18Y2'-2120'-25' 23' -27'
Hous boat
Work Baal
Du alDual, Fast Dual, F