1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 166Get this manual
Exhaust Housing Servicing Removal 1Remove the powerhead as described in Section 42Remove the gearcase as described in Section 6
& V4 manual tilt models have tilt assist shock absorber which
exerts considerable upward pressureRemoving the exhaust housing while in the down position could allow sudden release of parts which could cause serious injuryPlace motor in tilt position to relieve pressure
3Remove two lower engine cover rear rubber mount screwsretaining lower engine cover to exhaust housing adapterLift and turn lower engine cover assembly to free cover from adapter4Remove four lower mount to bracket screws 5Remove steering arm to upper mount screws W