Mercury Mariner 30/40 4-Stroke Outboard Service Manual 1998, Page 475Get this manual
BIGFOOT GEAR HOUSING
Water Pump Reassembly and Installation
1Place upper seal on longershoulder side of Oil Seal Driver (91-13949) with seal lip away
from shoulder2Apply Loctite 271 on .0 of seal; press seal into water pump base until tool bottoms