SPORTSTECH BRT500 Manuel D'utilisation page 38

Step 4
A
Attach the 2 pcs backrest pad support (3#) as the diagram shows, Secure them with
1 pc M10×155 Allen bolt (25#), 2 pcs Ø10 washer (31#) and 1 pc M10 Aircrafut
nut (33#).
B
Attach the incline support (4#) to the backrest pad support (3#) and secure them
together with 1 pc M10*150 allen bolt (26#), 2 pcs Ø10 washer (31#) and 1 pc
M10 Aircrafut nut (33#). You would select the desired incline when exercising.
Allen Wrench
38