Mercury 25 EFI Service Manual page 410

Gear Housing
Backlash Preload Tool
Backlash Indicator Arm
Dial Indicator
Dial Indicator Adapter
Page 6A-4
Prevents forward gear movement when checking the forward gear backlash.
12520
Aids in determining the forward gear backlash; use with a dial indicator.
12512
Measures gear backlash and pinion gear location.
29495
Attaches the dial indicator to the gearcase when checking backlash.
2999
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