Home › Forum › Ask A Member › Driver Coil check › Re: Driver Coil check
July 26, 2015 at 4:05 pm
#20911
2.70+/-.7 ohms is what I found for the 1976 9.9 electric start driver coil which uses the 581557 driver coil as well. Keep in mind that the design of later replacement driver coils was changed/improved so the resistance might be a little different on newer parts.
I often wondered why there is a difference between the electric and manual start driver coils, but have since discovered there is a difference in the flywheel magnets between the rope and electric start flywheels.