Welcome Jennifer,
If you look on the main forum page, you will find our Tech Library in the middle. If you click on Operator Manuals, you will find a 130 owner's manual listed in the Kohler powered tractors section. The Parts Manual for the 130/180 tractors is located the same way. Click on Parts Manuals/Case 100 Series garden tractors. All of the individual Service Manuals for the 130 are in the Service Manuals section.
In the FAQ's section, you will find documents that discuss how to change the hydraulic oil, which oil to use and so forth. Please.....spend some time reading. It's the fastest way to get yourself up to speed on this tractor. If you have questions that are not answered by the reading material or you are confused on an issue, then please come to the main forum and begin a thread. At the top of every forum is a READ ME FIRST sticky that explains what each forum is there for. We ask that you take a moment and read those.
Enjoy. :thumbsup: :thumbsup: