Pro-Form C840 User Manual page 14

28. Attach the Butterfly Frame (42) to the Rear Top
Frame (39) with two M10 x 78mm Bolts (110), two
M10 Washers (99), and two M10 Nylon Locknuts
(97). Do not tighten the Locknuts yet.
Attach the Butterfly Frame (42) to the Center
Upright (37) with two M10 x 68mm Bolts (113),
two M10 Washers (99), and two M10 Nylon
Locknuts (97). Do not tighten the Locknuts yet.
Tighten all of the M10 Nylon Locknuts (97)
used in steps 11–28. Tighten the 1/4" x 14mm
Screws (119) used in step 22 and the 1/4" x
9.5mm Allen Head Set Screws (120) used in
step 23.
29. Lubricate both axles on the Butterfly Frame (42)
with grease.
Insert a Fly Arm Bushing (92) into the Right Fly
Arm (43). Wet the end of the Arm with soapy
water and slide a Fly Foam Pad (95) onto it.
Have another person slide the Right Fly Arm (43)
onto the right axle on the Butterfly Frame (42).
Note: Be careful not to confuse the Left Fly
Arm (44) with the Right Fly Arm. Make sure
that the upper end of the Arm is behind the
indicated bracket on the Butterfly Frame.
Tap two 25mm Retainer Rings (93) onto the axle of
the Butterfly Frame (42) with the included retainer
tool. Make sure that the teeth on the Retainer
Rings bend toward the tool, as shown in the
inset drawing. Tap the 25mm Round Outer Cap
(94) onto the right axle on the Butterfly Frame.
Attach the Left Fly Arm (44) in the same
manner.
30. During cable assembly, see the CABLE DIA-
GRAMS on page 22 for cable identification
and to verify cable routing.
Locate the Butterfly Cable (83). Attach the
Cable to the Left Fly Arm (44) with an M8 x
16mm Shoulder Bolt (129) and an M8 Nylon
Locknut (96). Make sure that the Cable can
pivot freely around the Bolt.
28
97
99
113
29
Lubricate Axle
92
43
93
95
30
14
110
99
99
39
97
42
42
Bracket
94
Axle
42
93
Retainer
Tool
129
83
96
44
37
44