2006 Johnson SD 30 HP 4 Stroke Outboards Service Manual, PN 5006592, Page 209Get this manual
GEARCASE DISASSEMBLY
To remove the driveshaft bearing housing from the gearcase, use two 6mm bolts as screw jacksTurn each bolt alternately and equally to keep the housing level as it separates from the gearcaseRemove the pinion gear, thrust washer, forward gear, shim, and bearing
12345Pinion gear Thrust washer Forward gear Shim Bearing