The timing system is actually very simple and easy to set, once you understand it. There are two holes on your timing cam. They are designed both to hold the rotor in sync with the cam, and to indicate timing. Take a small Allen tool and stick the long end in your spark plug hole. The Allen tool is preferable because it cannot fall into your engine). Then put a tape measure up to it. Rotate the piston to TDC (top dead center). Note the relation of the Allen tool and metric tape measure demarcations. Rotate the rotor counter clockwise until the Allen tool has dropped 2mm. The two holes on the cam should be exactly up and down, and the points should not be open, but they should be about to. This is the break point. Now rotate the cam clockwise until the two holes are pointing through the axis of the engine through the spark plug hole). Your points should at maximum gap, .35mm to .40mm. / 0.16 to 0.14 English. Keep rotating clockwise and when the smaller third hole is through the axis of the engine, your points should be closed or nearly closed.