Honda BF115A, BF130A Outboard Motors Shop Manual., Page 259Get this manual
HONDA BFI 15A-130A
3) Install the pump liner in the impeller housing by aligning the two projections on the pump liner with the two grooves in the impeller housingBe sure that the part "A" of the pump liner is in alignment with the part "B" of the impeller housing, too[ PROJECTIONS ]
121 GROOVES A
4) Set the impeller housing over the vertical shaft, and set the special key in the position shown in the drawing (P12-41
Align the groove in the pump impeller with the special key, and install the impeller housing on the pump housing by turning the impeller housing clockwise viewed from the top of the housing
[6] "A" POINT
HOUSING
11ISHIFT ROD
121 CUT OF SPLINE
Do not turn the impeller housing counterclockwise with the pump impeller installed in the impeller housing After installation, check that the impeller gasket is set in the proper position131 CRUISING DIRECTlOh