Mercury 25 EFI Service Manual page 431

2. If the forward gear bearing race must be replaced, remove the race using a Slide Hammer.
Slide Hammer
3. Inspect the forward and reverse gear clutch jaws for wear. Rounded jaws indicate the following:
a. Improper shift cable or linkage adjustment
b. Engine idle speed too high
c. Shifting too slowly
a
c
4. Inspect the forward gear tapered roller bearing for rust, roughness, or excessive wear.
5. If the bearing is in serviceable condition, do not remove the bearing from the gear. The removal process may damage the
bearing.
6. If the forward gear tapered bearing must be replaced, use a suitable mandrel, Universal Puller Plate, and press to remove
the bearing from the forward gear.
NOTE: Replace the forward gear bearing race located in the gearcase if the forward gear tapered bearing is replaced.
c
b
a
Universal Puller Plate
90-8M0105568 eng MARCH 2016
a
b
a -
b -
c -
17007
d
b
91‑34569A 1
Forward gear teeth
Propeller shaft bushing
Clutch jaws
a - Universal Puller Plate
b - Tapered bearing
c - Mandrel
d - Forward gear
17008
© 2016 Mercury Marine
a - Forward gear race
b - Slide Hammer
16999
91‑37241
Gear Housing
Page 6A-25