1993 Johnson Evinrude "ET" 90 degrees LV Service Repair Manual, P/N 508287, Page 452Get this manual
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7 Install pressure gauge and adapter "A" to check problems in the UP circuit fN=J Tighten gauge and adapter lightly to 5-10 inIbs(0,6-1,2
i Ibs(5-6 Nm)Install retaining ring with sharp ed