Suzuki DF 25 Service Manual page 241

PROPELLER SHAFT / BEARING HOUSING
Assemble the propeller shaft in the following sequence :
forward thrust washer 5, reverse thrust washer 1, reverse gear
2, reverse gear back-up shim 3 and propeller shaft housing
4.
99000-25160 : Water Resistant Grease
99000-22540 : Suzuki Outboard Motor Gear Oil
NOTE:
Before installing propeller shaft / bearing housing assembly,
bring shift cam to the forward position by moving shift rod up or
down.
Using special tools, install the propeller shaft and housing as-
sembly in the gear case.
09922-59410 : Propeller shaft housing installer
09922-59420 : Housing Installer Handle
When the housing is fully seated, tighten both retaining bolts to
the specified torque.
Bearing housing bolt : 8 N . m (0.8 kg-m, 5.8 lb.-ft.)
RECHECKING DRIVESHAFT THRUST PLAY
Recheck the driveshaft thrust play.
This should not be less than previously checked. If less, reduce
the number / thickness of reverse gear back-up shims.
09951-09511 : Gear adjusting gauge
LOWER UNIT 10-17