19 got a 1974 enduro for 200 it ran ok then i took the carb out cleaned it but i drained the gas as well, dont knwo a thing about these bikes all i know is that theres a spark and if i use quick start it turns over for 2 seconds, need to knwo is there a gas/oil ratio? or what do you think it could be need help..restoring this for a gift to my father thanks