1969 Evinrude 55hp
I would like to do some maintenance on this tilt pump due to it struggling at the bottom end.
I have the service manual for the motor but it does not show the pump.
Was it an option with the motor or is it a after market add-on.
What oil do I use? What is the correct procedure for changing the oil?
Any help would be appreciated and thanks in advance.

I would like to do some maintenance on this tilt pump due to it struggling at the bottom end.
I have the service manual for the motor but it does not show the pump.
Was it an option with the motor or is it a after market add-on.
What oil do I use? What is the correct procedure for changing the oil?
Any help would be appreciated and thanks in advance.
