Backlash Indicator Arm 91‑803133 12
Aids in determining the forward gear backlash; use with a dial indicator.
Dial Indicator 91‑ 58222A 1
Used to obtain a variety of measurements including gear backlash, pinion gear
location, and TDC.
Dial Indicator Adapter 91‑83155
Dial indicator holding fixture.
Gearcase Specifications
Parameter Specification
Gear ratio 2.15:1
Gearcase capacity 460 ml (15.6 fl oz)
Gear lubricant type Premium Gear Lubricant or GL5 SAE 80W‑90
Pinion teeth 13
Pinion height Floating
Clutch Dog type (forward–neutral–reverse)
Forward, reverse teeth 28
Forward gear backlash 0.8–1.5 mm (0.030–0.059 in.)
Gear Housing (2.15:1)
Page 6A-4 © 2018 Mercury Marine 90-8M0125265 eng NOVEMBER 2017
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