i will look to see if i have a manual for one tomorrow if not you can get one for 20 quid .make sure you have a cdi unit, regulator /rectifier, indicator relay on the bike still or you are wasting your time as these parts are expensive especially the cdi unit ok, that is unless its a points model which it could well be seeing as its a 87 model look in the left hand case (left as you sit on the bike)and look through the magneto (round thing with magnets stuck inside it)there are windows in it you cvan look through them to see if there are a set of points and a condenser on the stator plate ok adam.:)
adam
December 2005