Mercury 25 EFI Service Manual page 439

1. Install the driveshaft bearing oil slinger into the gearcase.
2. With shims retained on top of driveshaft bearing, install the driveshaft assembly through the pinion bearing.
b
IMPORTANT: Install the pinion nut with the step side of the nut against the pinion gear.
a
3. Lift the driveshaft slightly and install the pinion gear. Thread the pinion nut onto driveshaft with the step side of the nut
towards the pinion gear.
90-8M0105568 eng MARCH 2016
a - Slinger
a
16995
a
a - Driveshaft
b - Shims (retained)
c - Upper driveshaft bearing
c
16994
b
a - Pinion gear
b - Pinion nut
c - Step side (install toward pinion gear)
c
17053
© 2016 Mercury Marine
Gear Housing
Page 6A-33