1998 Johnson Evinrude "EC" 90, 100C, 105C, 115, 150, 150C, 175 60 deg. LV Service Manual, P/N 520210, Page 104Get this manual
I1ll 4Install manifold screwsApply CIVIC Nut Lock to the intake [1!1
manifold screws adjacent to the crankcaseStart with the center and expand outward, torquing in stages to 40-50 inIbs(4,5-5,6 Nm)
5Check seals on the balance tubeReplace if necessaryLubricate seals and press balance tube into intake manifold