1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 56Get this manual

1963-1973 Mercruiser all Engines and Drives Service Manual Books 1 and 2, Page 56

CHECKING LUBRICANT LEVEL WAR G: DO NOT remove vent or fiDer plug when driv is hot from operationExpand hot "ar lubricant
1Remove "Oil Vent" plug and gas ket, located on ide driv shaft housing(Fi l1urc 1) Lubricant musl even with bottom dge of
thread "Oil nthole wh unit 2Add uperDuty Gear Lubricantif leve l' downR moveOil Fillplug and gasket (located on opposite
side of driv shaft housing)Add lubricant thruFillhoiuntil oil appears atVent" hole OTE: Only small amount of lubricant should
be added th ru drive shaft housing "Fill" hole1 drive unit is empty, drive must filled as shown in Draining and Filling Driue
Unit';foUowing3lnsta1J "Oi Vent" and 'Oil Fillplu1s w;th new aJ gaskets Figure 2Oi Vent Plug in Upper Gear Chamber lower
Gear Chamber I RemiJ entplug and gasket located 011 side of ar housing just abov anti-{:lvitation plate (Figur 3) Luhri canl
must be with ttom edg threaded il "Venlhole wh unit Ie I2Add ar Lubricantif level downR move "Oil illplug and gaskeloca ted