2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 142Get this manual
Lower unit
2Align the alignment mark on the bushing with the alignment mark on the bracketS6D81040
X-transom model
Lower case mounting bolt (nut): 39 Nm (3.9 kgfm, 28.8 ftlb)
Shift rod push arm: YB-06052 3Install the dowels into the lower unit4Install the lower unit into the upper case, and then tighten the lower case mounting bolts (nuts) to the specified torque