Mercury 25 EFI Service Manual page 440

Gear Housing
4. Using the Driveshaft Holding Tool and the Pinion Nut Tool, torque the pinion nut to specification.
b
c
Driveshaft Holding Tool
Pinion Nut Tool
Description
Pinion nut
5. Install the water pump base and pump cover onto the gearcase. Torque the pump cover screws to specification.
6. Install the Pinion Height Tool into the forward gear bearing race. The flat side of the tool faces up when installed in the
bearing race.
NOTE: Take the following measurements at three locations, rotating the driveshaft 120 degrees between each reading.
Rotate the driveshaft in a clockwise direction.
Page 6A-34
a
a - Driveshaft Holding Tool
b - Pinion nut (hidden)
c - Pinion Nut Tool
16406
© 2016 Mercury Marine
91‑853996 14
91‑853996 12
Nm lb. in.
35
90-8M0105568 eng MARCH 2016
lb. ft.
25