The click is when the impulse trips, this speeds up the mag when it's due to produce a spark.
First test is, take the plug out, lay it on the cylinder head and turn the engine over until the mag. clicks, you should see a spark.
If no spark there take the plug off the end of the lead and holding the insulation, hold it close to a head nut or other good earth, turn the handle past the click again you should see a spark.
No spark here? Now look for the points in the mag. Are they separating when the impulse trips?
Is there a white coating on the points? Clean and adjust the points.

thank you for replying i have got a spark on the plug and engine has been running but i dont think that i have got any compression as i can turn the handle with ease what can i do ps i have had new rings put in i do not know how to get my compression back please reply thanks alot the crawlerlad

thanks alot for that we will try that the tappets have been resat but when it did run there was no smoke at all but we only had it running for 20 minutes thanks alot the crawlerlad

thanks for that idont know weather or not the compression lever is working corectly i have took the inspection plate of and the compression lever when pushed down lifts the right hand tappet up slightly on the flat side not the curved side is thisb working corectly please reply thanks alot the crawlerlad

thanks alot we will see if it is clear of the tappet it has lost its comporession somewhere all the best crawlerlad