Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 235Get this manual

Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 235

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CYLINDER BLOCKCRANKCASE
Powerhead Disassembly
Thermostat and Exhaust Cover Removal
1 Remove thermostat cover, gasket, and thermostat2 Remove exhaust cover and gasket3 Remove oil filt