Its quite easy... Find the larger recessed circle (dimple) on the crank gear. Its larger and easier to find. Once you have that in sight (and the crank pulley is off with the old crank bolt back in), turn the crank clockwise until the large dot on the crank gear is almost at the 12 o'clock position. You might need a small flash light to see the small dot on the cam gear, but look on the teeth and see if you can locate it. If the dot on the crank gear is at 12 o'clock, then the small dot on the cam gear should be at 6 o'clock.

Once you have them EXACTLY lined up, you can take the cam retainer plate and cam gear bolts off. If you go to far, you have to turn the crank over 360 degrees CLOCKWISE until you get back to lining them up again. It may take several times to get the timing dots lined up, so don't bash your head in if you can't get it the first few times.