Get your machine details off the ID tags.
Go to the Cub cadet web page and from the support section download the parts book,
Scan down the descriptions for grease fittings.
As for the rest of the mower.
After blowing them clean liberally spray every place where two or more parts move against each other with dry lithium grease.
Leave the mower at least 15 minutes before you mow with it so the solvent can flash off.
If you bought them from a dealer ask the dealer.
It is a very long shot to hope there is some one oon any forum that has the exact same mower as yours , knows what you want to know and is on line.
People tend to come here when they have a problem then leave once it is fixed.
I suppose you have searched the forum using your model number and "grease",
This will pull up previous threads from people who could not find then, were told where they were then never came back.