Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 186Get this manual

Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 186

Gearcase Removal WARNING
To prevent accidental engine starting, remove (and isolate) spark plug leads from spark plugs BEFORE removing gear housing1Remove (and isolate) spark plug leads from spark plugs2Tilt outboard to full "UP" position3Loosen jam nut and disconnect coupler
4Remove boltsa

aBolts (3)

Gearcase Disassembly

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