How do i excite a coleman sport 1850 generator?

This unit is capacitor excited, simply pull the terminals from the capacitor and apply 12vdc to the the wires for about 1 second. Then plug capacitor back in reassemble and run generator and check voltages. If the rotor magnetism has been restored and everything else is good you should be producing power now.

There is an alternative way to excite back end but it is a little more dangerous. It involves starting the unit and then applying 12 vdc to either of the 120v outlets for less than a second. This is the best way but it is more dangerous because once the back end is excited the outlet will now be putting out 120 vac. So if you leave your 12 vdc source connected too long you will back feed that source with 120vac. What we've learned to do is to have 2 wires coming out of the outlets with the tips exposed then we take our wires with the 12 vdc source and just brush them quickly against the 2 wires coming out of the outlet.