Just t follow -up on what ouboardnut2 said… a little trick that makes the gear lube change a little neater. Screw the filler pump fitting into the drain hole.. pump till lube comes out of the vent hole… then BEFORE unscrewing the filler, install the vent plug and tighten. This minimizes the loss of lube while you quickly switch from filler fitting to the plug.
A small detail , but it helps
Joe B
