Thanks for the comments guys.
I gave it a run and it was a little sluggish before I pulled it apart. I thought that might have had a lot to do with the previous owner putting 2 stroke in the fuel tank.
Anyway I proceeded to take the carby off without damaging the linkages, talk about fiddly but not too difficult.
I thoroughly cleaned the carby including the emulsifier with cleaning and compressed air. I cleaned each of the small emulsifier holes with my jet drills to ensure they were spot on.
I put everything back together and it wouldn�t fire up.
The linkaged were correct, the choke was opening and closing as it should. I then did some reading and found the air cleaners on these can be of poor quality just like bigted mentioned.
I then removed the air cleaner cover and it fired right up and sounded perfect. Much better than before the carby was pulled apart however when you put the air cleaning cover back on the engine dies.
I have included some photos which I hope might help others. I look forward to your thoughts���
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