Pro-Form TRAINER 420 User Manual page 11

12. See the lower drawing. Position the Uprights
(53, 54) so that the Frame (51) is centered be-
tween them.
Firmly tighten the two M10 x 60mm Bolts (1)
and the four M10 x 75mm Bolts (2). Be careful
not to overtighten the M10 x 60mm Bolts.
13. Attach the Latch Housing (48) to the Left
Upright (53) with two M4.2 x 19mm Screws (10);
start both Screws before tightening them.
Make sure that the large hole in the Latch
Housing is on the indicated side.
Remove the knob from the pin. Make sure that
the collar and the spring are on the pin. (Note: If
there are two collars, place one on each side of
the spring.) Insert the pin into the Latch Housing
(48). Then, tighten the knob onto the pin.
14. Make sure that all parts are properly tightened before you use the treadmill. Keep the included hex keys
in a secure place. One hex key is used to adjust the walking belt (see page 20). To protect the floor or carpet,
place a mat under the treadmill.
12
54
13
48
Knob
10
Large Hole
11 11
1
51
Top View
51
53
Spring
Collar
Pin
2
53