1. There is a silver metal tab at the rear base of the heel
unit. Lift this tab with a flat blade screwdriver.
2. Without snow on the bottom of the boot, place the
toe all the way into the toe unit and move the heel unit until it makes contact with the boot heel. Push down on metal tab
to lock in place.
3. Click the boot into the binding and notice how much
of the metal tab is exposed. I/2 the tab should be showing. No more and no less. See photo and adjust per 4 below.
4. If most of the tab is
showing, move the heel unit one number forward. If most the tab is hidden move the heel back
5. See SR 100 instructions
9-10 for the other settings.