Below is the Super A operator's manual, if you don't have one. The experts on here recommend people read the operator's manual.
It has lots of info about operation, maintenance, and lubrication.
The lubrication section begins on page 20.
http://farmallcub.com/rudi_cub/www.clea ... index.html
I would check or change all the oils, if they haven't been checked or changed lately.
Using the tractor with low oil in a gear housing can damage the parts in the housing.
There are 3 separate gear housings, with 3 separate oil levels to check in the rear area of the tractor, the transmission, and 2 final drives.
The air cleaner is an oil bath air cleaner.
Dirt that is sucked in settles to the bottom of the oil cup, at the bottom of the air cleaner.
The oil cup needs clean oil in it so the air cleaner will work right.
