It’s called the auger height adjustment lever, and it’s unique to Honda Snowthrowers with tracks. The continuous lift from the low setting, which allows you to clear pathways close to the ground, will smoothly rise to take on uneven terrain with deeper snow.
Carry on through
When the going gets tough, a Honda gets going. When your snowthrower starts to bite off a bit more than it can chew, simply raise the auger to its highest setting; it will carry on chomping and throwing, even if you run into a high bank or deep snow. There’s no stopping a Honda.