with the printed marking on the belt. For me the best orientation for was with the crank dot at the 4:30 to 5 o'clock position (see picture below - there is also an alignment notch behind that wood shim on the belt guide/protector).
FYI-Besides the FSM there is also a nice T-belt FAQ write-up on this site. This Auto-FAQ is also helpful -- CLICK HERE >>> La-Z-Link