ORIGINAL: w8ye
The FG20's operating characteristics are somewhat different from a FA125 though many parts will interchange.
My experience is that the original Saito ignition with the big inductive timing pickup is nothing but trouble. I changed mine out to the RCEXL ignition.
In spite of the carb having a built in pump, it is very weak and the fuel tank needs to be as close to the carb as possible.
Thanks for your comment re SAITO FG20cc................i'll probably will exchange the ignition with the RCEXL one. After reading so many comments (negative) about this engine, I feel i made a bad choice.