SELECTION LINE: Service & Maintenance Manual - rev. 4.0
Page 2.34
2.9. ADJUSTABLE BENCH (P820/P920): BACKREST
ADJUSTMENT MECHANISM
The Adjustable benches (P820/P920) have the following backrest adjustment mechanism (see figures
below).
In detail, it’s present a safety grub screw that prevents the bench from disengaging during use.
Moreover, the pin of the knob is grooved.
Joint: