Here is a rough guide to checking a coil with a multimeter. Disconnect the kill wire and read the resistance between that and the core. It should be low in the order of single digit ohms. My Kubota one factory spec is actually 0.6 ohms. Then check the HT output to the core. It should be in the tens of kohms range. Again the Kubota factory spec is 12.5kohms (within 20%). I found it wiser to remove the HT lead and check it straight at the terminal as well as at the end of the lead then you will know if it is the coil or the wire if it reads open circuit, like mine did and it turned out to be the cable, thankfully.
