Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 36Get this manual

Mercury Mariner V-250 V-275 Outboard Service Shop Manual 1990, Page 36

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SWITCH BOX(ES) REMOVAL AND INSTALLATION
ACAUTION
Switch boxes must be grounded to engine before cranking engine, or switch boxes will be damaged

Switch Bo)!; Mounting Screw Gr