1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 213Get this manual
32Fill the gearcase with 16.4 flo ozs(485 ml) lubricant as follows: The gearcase must be in an upright position Remove the oil level and the oil filldrain plugsReplace the seals if damaged Fill the gearcase with OMC Hi-Vis gearcase lube until lubricant appears at the oil level holeInsert the oil level plug firstInstall the filldrain plugThe filldrain plug has magnetTighten the oil level and the filldrain plugs to torque of 60-84 inIbs(7-9 Nm) Inspect the gearcase oil level after the motor test has been performed33Adjust the shift rod as follows:
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 positionRotate the shift rod full turns up or down as necessary to obtain the correct adjustmentCheck the shift rod height with the rod offset to the frontShift Rod Heights