Hi,
You didn't say what you are doing to the Cub, service and maintenance, or taking it apart for a rebuild.
You didn't say what year the Cub is, there were changes to the electrical system, and other things over the years.
The Cub operator's manual can help you learn about maintenance that the Cub needs.
The manual closest to the year of your Cub will show close to how your Cub originally looked.
Below is the 1949 Cub operator's manual. The experts on here recommend people read it. It has lots of info about operation, maintenance, and lubrication. There is a table of contents on page 1.
It shows how Cubs originally looked in it. The lube section begins on page 14.
http://farmallcub.com/rudi_cub/www.clea ... index.html
It shows the electrical system that a 1949 Cub originally had.
Cubs made before mid 1964 originally had 6 volt, positive ground electrical systems.
The 10W oil mentioned in the manual for the Touch Control, was changed later to use Case IH Hy-Tran fluid. It is sold at Case IH dealers.
There are other brands, be sure it works with IH hydraulic systems before buying one.
I would check or change all the oils before using the Cub. Using it 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 a Cub, the transmission, and 2 final drives.
The transmissions in Cubs commonly get water in them, from rain, or condensation inside the housing over time.
The air cleaner is an oil bath air cleaner. Dirt that is sucked in settles to the bottom of the oil cup. It should have clean, light motor oil in the oil cup to work right.
There is a search box at the top of the page, to the right of the Farmall Cub, you can find info in posts that have been made.
Below is the Cub service manual, it has lots of info about taking the Cub apart, and repairing it.
There is a contents beginning on page 1 of most sections, that makes it easier to use on the internet.
http://farmallcub.com/rudi_cub/www.clea ... index.html
Below is the Cub parts manual.
http://www.farmallcub.info/galleries/ci ... _Rev_3.asp
Good luck with the Cub.
