I need information about how to adjust ignition timing of Suzuki Intruder 1400

Hi,as with most modern bikes(if not all)the ignition timing is not adjustable,the advance ****** function and all the timing is controlled by the cdi(black box)unit,these are sealed and non adjustable,the only moving part in the whole ignition system is the interrupter which is located on the end of the crankshaft assembly which spins with the crankshaft between two pickup sensors,these sensors are also fixed and non adjustable.all of the timing parameters are factory preset and once again non adjustable,if you are having problems with the bike not running smoothly or surging etc,i would be looking at the carburettors or fuel system..hope this helps