If you're new to a big single cylinder bike, be aware that you need a bit of revs at low speed especially in higher gears above first.
If your idling is high enough, and it's a used bike, the air filter could be dirty which could affect the the Throttle Position Sensor setting or the CO adjustment. At least that was my experience with my XTZ

__________________
2014 XT660Z - Barrett pipe, DNA stage1.5, Barkbuster hand guards and handlebars, Pivot pegs, Teknik suspension, Guard-it engine protector combo, B&B rear rack, Trax topbox.