1983 Yamaha 30EN Outboards Service Manual, Page 109Get this manual
NOTE: _ The bearing should be installed so that the mark on the bearing is on the exposed-to-view side
3 Press-fit the reverse gear, which is fitted with the ball bearing, into thebearing housingbNeedle bearing and oil seal 1Install the handle on the attachmentPlace the bearing housing with its gear side down, place the needle bearing in the bearing housing so that the mark on the bearing faces upward, and press fit the bearing using the attachment2I nstall each oil seal in the attachment, and press-fit it in placeClutch dog, cross pin, and shift spring 1Install the clutch dog so that its cross pin hole is aligned with the slot in the splined portion of the propeller shaftThe clutch dog should be installed with the "Fmark facing toward forward gear