Sears PROFORM XP 100U 831.21641.1 - Manual (Page 7)

8. Turn the Adjustment Knob (11) counterciockwise two or
three turns to loosen it (if the Adjustment Knob is not
loosened enough, it may scratch the Seat Post [5]).
Next, pull the Adjustment Knob, insert the Seat Post
into the Frame (1), and then release the Adjustment
Knob.
Move the Seat Post upward and downward
slightly until the pin on the Adjustment Knob
engages one of the holes in the Seat Post.
Then,
turn the Adjustment Knob clockwise until it is tight.
9. Identify the Left Pedal (24), which is marked with an
“L.” Using an adjustable wrench, firmly tighten the
Left Pedal counterclockwise into the left arm of the
Crank (13). Tighten the Right Pedal (not shown)
clockwise into the right arm of the Crank.
Important: Tighten both Pedals as firmly as pos­
sible. After using the exercise cycle for one
week, retighten the Pedals. For best performance,
keep the Pedals tightened.
Adjust the left Pedal Strap (25) to the desired posi­
tion, and press the end of the Pedal Strap onto the
tab on the side of the Left Pedal (24). Adjust the
right Pedal Strap (not shown) in the same way.
10. Make sure that all parts are properly tightened before you use the exercise cycle. Note: After assembly is
completed, some extra parts may be left over. Place a mat beneath the exercise cycle to protect the floor.