Use the choke for the first start of the day. I’ve drained the float bowl several times a day after the first start in the morning to change jets. Never have had to use the choke a second time in the day. Go over the things Rob mentioned. Check the electricals as there is a chance you’re not getting spark. Has anything been done to the motor since it last ran?
LAD Specialties customer / tony kart / rotax / kt100