Same thing happened to mine this year...same bike too
The seal in the oil pump shaft had popped out, bought a new one but i'm sure i could have just popped the old one back in.
Turn the engine using the kickstart until the points are at the widest gap. Adjust this gap to the correct one in the haynes book.
now set the engine to the correct place for the ignition (see your haynes manual)
Place a cigarette paper between the points.
loosen the screws holding the points backplate and turn the whole thing while pulling gently on the cigarette paper.
You will find that at some position the points will begin to open and the paper will be free.
Tighten the backplate screws in this position
Job done
Least thats what I used to do when i were a lad
Dont drop a gear when passing horses, roll off the throttle and give a wide berth, it's no fun being on a startled horse I've done it. give me a bike any day. Take a chill pill young Derek