Honda BF15D BF20D Outboard Motors Shop Manual., Page 74Get this manual
2PROPELLER SHAFT HOLDER aREMOVAL
1) Remove the propeller (P4-2)2) Set the gear in the neutral position and remove the two 20 mm flange bolts3) Using screw drivers and remove the propeller shaft holder assembly with care not to damage the gear case
bDISASSEMBLY
1) Remove the shift slider2Remove the propeller shafl assembly, reverse bevel gear and thrust washer from the propeller shaft holder