Thanks again for all the helpful replies, i didnt expect such a welcoming response, I am glad you have mentioned a parts supplier, i have been finding it difficult online to find one, so i will ring him today
I have got quite an in depth knowledge on engine building (I do race cars) buts its been years since i turned my hand to 2 strokes, last time i did it was motorbikes in my youth! These outboards look a bit more complicated, but i guess in practice 2 strokes are all the same.
I'll get the parts ordered then with a new pulse pipe and diapghram kit for the fuel pump, plugs etc and go from there.
I'll report back with my results.