81 430 wr ignition

Any one know how to test an 81 430wr sem magneto? Bike had weak spark and was hard to start especially when hot. Replaced upper ignition coil and now I cant' get any spark

test SEM HUSQVARNA
cable black and red is 1.7 K ohms != SEM OK good !
or 1.4 K ohms ! = SEM OK good !
(excuse english bad ! )

its possible key flywell =bad !
its possible magnet flywell =bad!

mine tests 1.7 both ways red to black so I guess its bad.

no ! no !
magnets OK ?
magnets in SEM
is deficiency !

Thanks for the info! I'm waiting for flywheel puller so I can check the magnets.