FC420 Ignition Module

I need to replace the ignition module on my FC420V (CS05), pull start. The part number, 21119-2101 (2161) is no longer available. I cross referenced an replacement from Stens, a Mega Fire 440-465. The original igniter has 1 terminal, the Stens has 2. Is the Stens, in fact a suitable replacement? And, if so, how is the 2 terminal igniter wired in?
Any help is welcome...thanks.