Suzuki DF 2.5 Service Manual page 129

REPLACING DRIVESHAFT OIL SEAL
1. Remove the oil seal using special tools.
2. Apply the Water Resistant Grease to outer circumference of
the oil seal.
3. Drive the oil seals down into the housing with lipped portion
toward the water pump case. (one at a time)
4. Apply the Water Resistant Grease to the seal lips.
 09921-20210: Bearing remover
09930-30104: Sliding hammer
 99000-25161: SUZUKI WATER RESISTANT GREASE
DRIVESHAFT
Inspect the driveshaft. If wear, twist or other damage is found on
the splines, replace the driveshaft.
LOWER UNIT 8-9