Snow Blowers

I have a Husky ST230E that is a couple seasons old and the machine infrequently stops pulling for a few moments when in use. Snow auger stays engaged with no hesitation. Happens in pretty much any gear, however, the lower gears are most noticeable. After a couple of seconds, it starts pulling again on it's own. Is this a loose belt that could be adjusted or part of the friction drive? Thanks, Mike