i had this with mine as jonny he will tell ya!
turn the engine over until no1 is at tdc ie the bottom pulley mrk is on the arrow on the cam cover.then pull the bung on the gearbox and make sure the tdc mark on the fly wheel is on the marker on the gearbox??if its not then sumik is adrift with the timing???if all is well then its all good so far.
next turn the ignition on as though you are about to start it,then go to the dizzy checking that the rotor is pointing at no1 you will know by looking round the outside of the dizzy edge there will be a notch in it the rotor should be pointing at this!replace the cap and turn dizzy untill you hear a click with turn it back and fourtrh so that youve got it right on the click and then turn the dizzy back(anti clockwise a couple of mllimetres and tighten dizzy.now try and start it?

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this is basically the standard setting if she doesnt fire up theres defo sumik else wrong apart from fueling and spark it would suggest that you timing is all over the place and it could all do with retiming,valve timing,ignition timing and time for a sit down to try and clear you head of all the threats of smashing it up or burning it!lol hope this helps thiis is what i did to mine and she fired up first time after i had set the valve timing :embarassed: :embarassed: