Make sure you give it a proper kick when checking for a spark. The iginiton needs a certain amount of revolutions to start working, if I recall correctly it's something around 300rpm, wich is a good kick.
Made this mistake before as it is ackward with the left side kicker, trying to hold the lead 1cm from the block and then giving it a proper kick to get the amount of revolutions needed for the ignition to start working.
If it does work you will see the spark jump from the lead to the block clearly even if it is during daylight.
About the test, first thing you need to do is take the spark plug cap off of the coil wire, hold the coil wire +/- 1cm from the engine block (wich is the ground for the ignition system) give it a GOOD kick (an extra pair of hands make this a lot easier) and you should briefly see an electrical arc between the end of the lead and the block.
If this works try it with the spark plug cap and spark plug in place, just hold the plug AGAINST the block and again give it a good kick you should see a spark from the centre of the plug jumping to the bent metal part thingie
Make sure not to touch any metal parts on the spark plug
