Hi Dave, an a warm welcome to the forum.
It's great to have another Scott Bonnar owner on board.
As far as I know, and I have asked a good mate who was a dealer, no service manual was produced for the Model 45.
Briggs and Stratton have a manual for the engine, but for the chassis, they are really very simple to work on, with a set of spanners, screwdrivers and a three leg gear puller, the machine itself can be completely disassembled quite easily, and with all parts being still available, repairs can be made by replacement if necessary, for a person of basic skills.
The owners manual covers most adjustment procedures, and the spare parts list comprehensive.
If you have any questions, we have members on this site to help you achieve a good result. All you have to do is post, preferably with pics of the area of concern.
Once again Dave,
