12 volt conversion

Theoretically you can get 12 volts from a 6 volt generator, but not at any useable current rate. I doubt that adding a 12 volt regulator would do you any good. If you're going to use the generator, have someone like Steve rewind it for 12 volts and match a regulator to it. It would cost less and you'll have a better system if you simply convert to an alternator.

The only way to make a 6V Gennie put out 12V's is to completely gut the unit, fill it with 12V components, (including the arm) and mate the correct 12V VR to it to complete the package. I do the complete changeover with new VR all set up on the 881 machine ready to hang back on the Tractor for around $350. plus the ride. You get to keep the OEM look, yet you've upgraded to 12V's. It would also be a good idea to renew all wiring & components, and do the same to the Starter motor. Running 12V's through 6V field coils tends to make the Starter a little on the violent side. Cracked nose cones, bent drives, premature worn ring gears are just a few of the issues that come to mind. Can the 6V Starter handle the 12V current? Absolutely! Will it last with regular use?  NO.