Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 426Get this manual
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BIGFOOT GEAR HOUSING
18 Puller Jaws (91-46086A 1)
19 Driver Shaft Holding Tool (91-56775, 2-Stroke) (91-817070, 4-Stroke)
20 Dial Indicator (91-58222A 1)