Hi Paul
Their not picky, but just follow the 10 20 30 rule - 10thou coil, 20thou ign points, 30 thou spark plug gap.
From memory, I think it might even technically be 11 thou, but it wont make any difference.
Regarding manual, there will be a model type code on the engine cowl (probably have to remove air filter to see it. It will probably start with 6 in this case. Thats the best way to track down the manual