Can't get her started.

So the bike is a 75 200T and it's been sitting for 2 years. The last time it was started it ran perfectly but now after being off for so long it doesnt start up. I checked the carbs and there is fuel in them. I checked the plugs, which are fouled, and they create a very small inconsistent spark. I know that the fuel is reaching the engine cause the spark plugs were wet. My next step is to replace the spark plugs and use some starter fluid and hopefully I can get her going but does anyone know what might be the issue?

Any help or tips would be great!

Thanks.