708cc predator motor no spark

Hello  I have a 708 cc predator motor that i installed on a old murray rider , it was a goat @#$% but I got it on there . I ran the motor maybe a total of 5 minutes and now it won't start. I cant get any spark to the plugs , I have resistance on the secondary side of the coils around 60 . But when I check the primary side of them i get a reading of 23 from one and 04 on the other .Can someone tell me what should I have foe voltage on the primary side of these.