Suzuki DF25/DF30 Four Stroke Service Manual, Page 234Get this manual
10-10 LOWER UNIT Replacing propeller shaft oil seal 1Extract the seals with oil seal remover09913-50121Oil seal remover Do not reuse oil seal once removedAlways use new oil seals2Apply Water Resistant Grease to the inner circumference of the housing3Using an oil seal installer, drive the two oil seals (one at time) into the propeller shaft bearing housingThe lipped portion of the seal must face towards the propellerApply Water Resistant Grease to the seal lips99000-25160: Water Resistant Grease