1998 Johnson Evinrude "EC" 9.9 thru 30 HP 2-Cylinder Outboards Service Manual, Page 210Get this manual
8Remove the three screws retaining the idle relief mufflerRemove the mufflerDiscard the muffler gasket and seals from the screws9Remove the two remaining lower mount housing screws from the port lower mount housingSeparate and remove the port and starboard lower mount housingSlide the mount housing bumper from between the lower front mount and the exhaust housing10Remove the nuts and washers from the two upper side mounts
11Remove the nut and the washer from the upper front mountSeparate the exhaust housing from the swivel bracket assembly
12Remove the two screws retaining the lower motor cover bracket to the exhaust housing and remove the bracketRemove and discard the exhaust housing to lower engine cover seal
13Remove the upper side mounts and the lower front mount from the exhaust housing14Remove the nuts from inside of the exhaust housing that retain both lower side mounts to the exhaust housing
15Refer to Cleaning and Inspection at the beginning of this sectionAssembly and Installation