Hi Paul,
First a big warm welcome to this fabulous wealth of information that we cal the ODK Forums.
As you have noticed I have moved this thread to the SB section of the "Repairs and Maintenance" sub-forum where it will be of much better use to new members and also existing ones as the "Lawn Care section" is merely for in-depth turf care stuff only.
I must admit that what you are about to embark on has been covered over and over again on the platform and I'm sure you pretty much get all your info from previous members who have embarked on exactly the same thing as what you are about to also do.
The best thing you could do at this stage is take quite a few good close up and general photos so that we can get a good idea of what needs to be your starting point.
So for now, Welcome to the wonderful world of the Model 45.
Cheers,
BB.