You will need the instruction manual and also the Valve chart which is what I use on my 45 B version.
here is the chart for the C version
https://archive.org/details/taylor_v...5a_45b_46a_47a
I have found the 45C instruction manual, I shall try to upload the pdf here.
If that doesn't work send me a PM.
Search this site and you will find more.