G'day Silverfire,
I had a brand new 1972 GT750 when they first came out and rode it most of the way around Australia. My bike had drum brakes on the front, yours should have twin disc brakes I believe.
Yours should be similar in design, the bike has coil and points ignition with three sets of ignition points under the LH engine cover and three coils under the fuel tank.
The points cover is chrome plated metal, take this off and check the points, clean the contacts and set them at .012' to .016" and see if you get spark when the engine is turned over.
Take the spark plugs out and clean and gap them properly, gap is .028".
There are also drain plugs on the bottom of each carby, remove those and see what comes out, probably a lot of gunk, let fuel flow through the carbys to try and clear out any rubbish. If the fuel won't flow then the fuel tap on the tank needs looking at.
Make sure there is sufficient two stroke oil in the oil tank, these bikes don't take a two stroke mix in the fuel tank.
If you've got fuel and spark it should at least cough and spit and with a bit of luck it will start.
If it's been sitting without running for over a year it will probably take a lot of cranking to get it going and then you'll get a huge cloud of blue smoke.
Good luck with it and let us know how you get on.
Regards.
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