With the generator installed on the engine and all leads connected...
Momentarily connect a jumper wire from the 'BAT' to the 'GEN' or 'ARM' terminal of the voltage regulator.

  Vic Correnti

Thanks! I'll give it a try today.

take the cover off the regulater and most likley the cut out coil is stuck. that ewill kill the batery and fry the generator. if seperated you may be able to clean the contact with sand paper(not emerey) wher do you live. had a new 6v pos grnd reg.

be sure you have a 6V positive ground regulator. they may have changed it when they hooked up the battery in reverse..

re polorizing hot jumper to the f termn(neg term as positive is the ground.) re the reg getting warm the cut out id stuck on unhook batery remove the reg cover free the cutout and clean the points on same. acording to old motors manual the reg should be ok ,just that the batery is discharging threw the gen. and with batery on neg ground most likley afected cutout. while your atit make sur the charging is at least 8.5 to 9 volts, that way battery will be charged on high sid meaning better starting