Honda BF9.9A-BF15A Outboard Motors Shop Manual., Page 100Get this manual
HONDA SHIMWASHER SELECTION
Select the shims and washers in accordance with the identifications on the gear case, whenever you replace the gear case
[3] PINION SHAFT
THRUST BEARING WASHER
40 mm SHIM
PROPELL
THRUST BEARING WASHER
1 Identification 1
Noof washer