remove the plug ! empty oil ! put on it side and fill it slowwwly to let air come out
It is a 2 stroke so it is in the gas and the lower unit has gear lube in it which can be checked by removing the upper plug on the side of the unit.
Mine had a small rubber plug on the outside, lower edge of the unit.
cobra outboard drive unit drain plug inner threads fell in unit
in the lower unit
pwd 40
10
you have to divide by 10
divide by ten
To change the lower case lube, undo the drain located at the bottom of the case and drain fluid. Above the drain port approx 6" there is another port. Remove that plug as well. Once the case is drained refill it by forcing the fluid into the bottom port. When it starts to come out of the top port it is full. Install drain plugs and you are done. You have to fill from the bottom to avoid any air pockets.
does the lower unit need to be removed to replace the water pump on a 1995 Johnson 115 hp outboard engine
1 qt, just filled mine
You unscrew the top plug on the lower unit and carefully unscrew the drain plug on the bottom and quickly put the nozzle end of the oil container in it and keep squeezing till the oil just starts to come out of the top hole. This runs any water and/or air out and guarantees that the gearbox is lubed properly.