regulator was not putting out any charging voltage.. we discounted the ac input lines it ranged between 15 ac and 40 ac with different engine speeds.. we checked the regulator one side of the ac input is shorted to the dc output.. is the normal??
my dads has a toro zero turn mower with a kohler ch 25 68543 motor.. it has a very erratic backfire can be at lower or high speed .. sometimes very low backfire.. sometimes very loud... the ignition coils were both replaced last year... but if you put about 1/3 choke on it runs very well ...