I've just found this info...
Originally publ. by Lion Engineering Co. 1971. Detailed guide to all machining and fitting operations needed. Emphasis on the moderately equipped workshop. Hardbound, 8vo, 179pp plus specs. Well illustrated.
Loosely inserted is a 12pp booklet, "How to get the best from your model traction engine". Nr fine in nr fiine dustjacket, newly protected in clear, removable sleeve. Bookseller Inventory # 8012
One Google site says it has 10 pages, another 12 pages, so it was only a leaflet really..
The site is
http://www.abebooks.co.uk/Building-R.../1021539174/bd
Let me know if you find it please.
Nick