Dose anyone know how to set the distributor timing on a 1993 Yahmaha i/o 350 engine. The ignition system has the 8 pack coil set up on the back of the engine and it is run by a computer. The dis has a plastic cap and under it there is only the pick up coils, no rotor to see what cylinder is firing. I droped in the dis but not sure how to set intial timing. Thanks in advance