Tohatsu 4 Stroke MFS 2/2.5/3.5A Outboards Service Manual, Page 133Get this manual
Lower Unit 5Install pump case (upper) ass'y on the gear case, and tighten bolts in two or three steps to specified torqueApply grease to interior of pump case liner, and install pump case (upper) by pushing it down with hand while turning drive shaft clockwisePump Case (Upper) Bolts(4 lb ft) [0.6 kgf m]