Hello John, Welcome. Wheel Horse started using C-101 on their 10hp Model from 1978 with a Model Number of 81-10k801.
So depending on which year yours is, will depend on what Manuals you will need.
Once you know your model number (on a small black Plate under left side of dash usually) and then the year, you can search for them on the WH sister site here-
-Redsquare- Many of us here are also members on that Forum.
As you have a different sized Engine fitted, you will need to note the Model, Spec and Serial number (if it is a Kohler) and search this site link-
-Kohler-
Any problems, come back with the details required above and we'll see if we can fit you up with what you need. If you have any pics you can post, we like pIcs.
Regards