Unscrew the chain tensioner bolts (2) fully and then push the wheel forward.
Engage a low gear to provide resistance for the next operation. Unscrew the two bolts (3) on the sprocket stop plate.
Remove the stop plate from the transmission shaft.
Slide the sprocket and chain off the transmission shaft. Run the chain off the sprocket.
At reassembly, apply low-strength thread locker on the screw threads (3).