1987-1993 Mercury Mariner Outboards 70/75/80/90/100/115HP 3 and 4-cylinder Factory Service Manual, Page 139Get this manual
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11 The intake manifolds may be removed as 1-unit Flywheel Removal CAUTION
Crankshaft damage may result if protector cap is not used between crankshaft and puller3 Install crankshaft Protector Ca