Honda BF115A, BF130A Outboard Motors Shop Manual., Page 83Get this manual
HONDA B 15A-130A
Remove the two breather elements from the breather element cover and check the elementsIf the oil drips from the elements or the elements are contaminated or clogged with dirt, replace the elementsInstall the elements with the side marked with "CLEAN SIDE" toward the breather tube1 BREATHER ELEMENT COVER
121 "CLEAN SIDE"
131 BREATHER ELEMENTS
Insert the first element to the position 13 (0.5 in) from the breather packing installation surfaceInstall the second element so that it mates with the breather packing installation surfaceInstall the breather element cover on the silencer case and connect the breather tube to the breather element cover10) Connect the TP sensor connector