2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 165Get this manual
Bracket unit
Assembling the upper case
1Install the drive shaft bushing into the upper case, and then install the circlip
Installing the upper case
1Install the upper mount and bolts into the upper case2Install the bolts 3, and then tighten them to the specified torque
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Drive shaft needle bearing installer and remover 1: YB-06196 Driver handle (large) 2: YB-06071
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2Install the muffler assembly by inserting the tip of the water pipe into the joint hole of the upper case3Install the muffler assembly bolts 5, and then tighten them to the specified torque