1998 Johnson Evinrude "EC" 90, 115 SPL Service Manual, P/N 520209, Page 169Get this manual
Installation
1If removed, apply soapy water to the two lower mounts and place the mounts in the exhaust housingPosition the mount coversInstall and tighten the cover screws to torque of 150-180 inIbs(17-20 Nm)
2Bring the exhaust housing into position with the steering bracket and the lower mount bracketApply owe Nut Lock to threads of the two upper mount screws Install and tighten the screws to torque of 50-60 ftIbs(68-81 Nm)
3Install and tighten the four lower mount screws torque of 38-45 ftIbs(51-61 Nm)4Position the lower engine cover on the adapter