Lower unit oil change.

[Gafisherman]

Hey guys,
i have a 1986 Mercury 25 hp motor, I need some info on changing out the lower unit oil. Do you just drain the oil then fill it again till it starts running over? And wanted to make sure i was taking off the right drain plug, cause i know on my johnson motor one holds the links for the lower unit and are a pain to realign. Thanks for the help

 

[aussieflash]

Re: Lower unit oil change.

Take out both plugs and gaskets.Top is vent, bottom is where you fill.Replace gaskets with new.