Hi stewart, you wrote in an earlier post:
Finally, regarding the Haynes manual - the one with the blue cover is a retrograde step by Haynes; it is poorly set out, confusing, and not particularly comprehensive. Have a look on eBay to see if you can get a copy of the older black covered book - it is much more informative and covers 740 and 760 models up to 1989. I got mine for about 4 quid.
Can you have a gander for me and tell me the ISBN of your manual, and/or the manual number. That would be a big help.
Thanks
Bill