Straight from the introduction inside the handbook which says it all –
In introducing this latest edition of Rudge Wrinkles, it is our aim to give, in a condensed form all the information which a rider should require to keep his Rudge in good tune. Those who wish for further information on the subjects of Ignition and Carburation should refer to the special booklets dealing with these subjects, issued by the makers, which are sent out with each machine.
Packed with great photographs and detailed instructions, the publication is age weary with dog eared pages that are yellowing as well as a few showing staining but still an informative manual covering maintenance issues for 250, 350, and 500c Rudge motorcycles.
Thanks to Mr Drake for supplying the scan of the original manual.
Click on the front cover below to see the complete 55 page manual.
It is a 11M PDF.
To read an interesting article from the 1970s Motorcycle News by Vic Willoughby on the Rudge Radial click here.