Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 108Get this manual
7Secure ca rier assembly with bolts (a) and washersTorque bolts to 70 lbin (8 N.m) 2Install gasket (a) ,
Impeller and Water Pump Housing
1Install gasket (a) and plate (b)
3Install water pump inse rt (a) into water pump housing mak ing sure to position locating tab (b) of inse rt into slot (e) of housing