RE: WILL AN ELECTRIC STARTER START A GAS ENGINE?
Why bother?
One of the many reasons I went to gas is to eliminate the starter/igniter complex.
OTOH, my $35 'Heli-Max' starter will fire a DA 50 all day long. It has been used to 'un-flood' a DA 50 when all available arms were spent. Have never tried it on a 100, but I doubt it.