1996 Johnson/Evinrude Outboards 50 thru 70 3-Cylinder Service Manual, Page 225Get this manual
Screw in vacuum testerPump out to 3-6 in(76-127 mm of mercury and see if vacuum holdsThen pump out to 15 in (381 mml of mercury and checkIf the gearcase fails to hold on either test, put lubricant around suspected sealIf leak then stops or lubricant is drawn in, that seal is defectiveWhen the gearcase checks out properly, fill the gearcase with the proper lubricant28Fill the gearcase ith 20-22 floz(600-650 mil of lubricant as follows:
Secure the gearcase in an upright position Remove the oil level plug and the oil filldrain plugReplace the seals if damaged Fill gearcase with OMC Ultra-HPF gearcase lube until lubricant appears at the oil level holeInsert the oil level plug firstInstall the filldrain plug Tighten the oil level and the filldrain plugs to 84-86 in Ibs(9-10 Nml Inspect the gearcase oil level after the engine test has been performed29To adjust the shift rod height, check from the shift rod hole to surface of the gearcase using OMC Universal Shift Rod Height Gauge, PIN 389997, with the shift rod in the NEUTRAL positionCheck the shift rod height with the rod offset to the port30Rotate the shift rod full turns up or down as necessary to obtain the correct adjustment