it is a 1970-ish motor that works well but won't idle, there is no loss in performance, i think it is related to the carb settings?? it just dies when the RPM gets low
Since it's running try carb cleaner in the fuel if that doesn't work try rebuilding the carb.There is adjustment on the carb for idles stop increase and see if that helps.Also there is 1 in the control box to raise the idle.