1997 Johnson/Evinrude EU 25, 35 HP 3-Cylinder outboards Service Manual, Page 79Get this manual
rn 12to the oilthe two screws securing the fuel outletfitting, Remove fitting retainer mixing unit coverRemove the retainer, and O-ringDiscard the O-ring
rn 13Pinch the piston seal and roll it off the pistonDiscard the piston seal
14Remove six screws securing the mixing unit bracket to the mixing unitNote the position of the bracket, then remove it
m rn the Remove thecover from the intermediate housing 15remaining two screws and washers Separate oil mixing