Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 198Get this manual
Reassembly Drive Shaft Needle Bearing, Bushing and Lubrication Sleeve Installation
1Install lower drive shaft needle bearing (numbersletters face down) using Drive Shaft Bushing Tool (91-824790A1)a d
3Install upper drive shaft bushing assembly using Drive Shaft Bushing Tool (91-824790A1)
NOTE: The upper drive shaft bushing is pressed into sleeveIf the bushing is not worn into the sleeve or the bushing is not spinning within the sleeve, the bushing alone may be replacedPress the new bushing into the sleeve using suitable mandrelIf the sleeve is damaged, the bushingsleeve assembly must be replacedb e