2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 132Get this manual
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Lower unit Propeller shaft oil seal installer 3: YB-06269 Driver handle (large) 4: YB-06071 Depth c: 5.0 0.5 mm (0.20 0.02 in) 3 Install the thrust washer and new ball bearing to the reverse gear usin