i have an older generator, its a 9hp, 5000 watt, briggs &stratton, model number 185432, it wont start it belonged to afamily member who bought it new about 4 yrs ago, it appears to be missing a part? its would be the stop switch wires,,an back into engine?thers 4 black wirs an 12 red one?how or where can i find out what should be connected to these? please help as we are on disablities an cant afford a shop....