i cant get it to start, its been running great recently but it seems the engage lever that starts the blade to spin hasnt been working right. like to put the mower away i would have to turn mower off then disengage to stop the blade from spinning then turn mower back on and then drive it up under my tool shed roof. it seemed to still work so i lived with that. im thinking maybe now why it wont start is because the mechanism is still engaged, will a craftsman riding lawn mower start if the blade is engaged? if not what troubleshooting should i do, im pretty good at fixing stuff but i dont know where to start with this, any help would be greatly appreciated.