This is the Service Manual for the Velocette Viper, Venom, MSS, 'Clubman' and 'Scrambler' Models, F484/9R (1967).
The Service Manuals were originally issued for Agents and Repairers, a separate less detailed Owner's Handbook being supplied with the machine. The content is appropriate to the parts and materials available at the time of manufacture; however, much has changed since and although substantial parts of the manual are still appropriate care should be taken is using it as a guide. For instance, modern tyres will use higher pressures than those quoted in this guide; alternative oils are available that might give improved performance; some tweaking of carburetter settings may be required to allow for current fuels.
The owner should regard this manual as a starting point. Much advice (and debate!) is available, not least from the Owners Club and a very active technical forum, for the practical use of these machines in a modern context.