1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 497Get this manual

1992-2000 Mercury Mariner 105-225HP outboards Factory Service Manual, Page 497

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Gear Housing Specifications (Standard Rotation) PINION DEPTH Gear Case 1.87:1 (1528 teeth) and 2.00:1 (1428 teeth) Ratios 2.3:1 (1330 teeth) Ratio Pinion Depth 0.025 in(0.635mm) With Tool 91-12349A2 u