ProForm C 840 User Manual page 7

8,
Insert the Backrest Bracket (7) through the slot in
the Bench Frame (1) and under the Adjustment
Lever (11). Make sure that the M10 x 72mm
Flat Head Screw (27) is under the Backrest
Bracket arm.
Lubricate an M10 x 155mm Bolt (109) with
grease. Attach the Backrest Tubes (8) to the
Bench Frame (1) with the Bolt, two M10 Washers
(99), and an M10 Nylon Locknut (97). Do not
overtighten the Locknut; the Backrest Tubes
must be able to pivot easily,
Attach the Backrest (14) to the Backrest Tubes
(8) with four M6 x 38mm Screws (102) and four
M6 Washers (101).
Tighten the four MIO Nylon Locknuts (97)
used in steps 1 and 5.
Attach the Seat (15) to the Bench Frame (1) with
an M6 x 63mm Screw (103), an M6 Washer
(101), and two M6 x 16mm Screws (104).
7
8
8
14
99
27
7
11
Lubricate
7