Schwinn 170 Service Manual page 15

NOTICE: It is necessary to remove the Shrouds for this procedure. Refer to the "Replace the Shrouds" procedure.
Disconnect all power to the machine before you service it.
!
Note: Your machine may not match the image. For reference only.
1. Remove the Top Shroud, Left Shroud and Right
Shroud from the Main Unit. Refer to the "Replace the
Shrouds" procedure.
2.
To test the Drive Belt tension:
• Push the Drive Belt downward at the midpoint (M)
between the pulleys and measure the distance. The
Drive Belt should have only 0.25" (0.64 cm) of give.
See Figure 1.
Or:
• Hold the edges of the Drive Belt at the midpoint (M)
and twist it (see Figure 2). It should turn only 90
degrees
(1/4 turn, to vertical).
If the tension is correct, go to Step 6.
If the tension is too loose or too tight, adjust the position of the
Flywheel. Continue to Step 3.
3.
To loosen the Flywheel hardware (A), use a 15 mm
open end wrench to hold the nut on one side steady and
loosen the nut on the opposite side with a 15 mm socket
and wrench.
4. Move the Flywheel in the Main Frame bracket as
necessary to adjust the tension. Hold it in position and
tighten the hardware.
Note: This step may require two people.
To tighten the Flywheel hardware, use a 15 mm open
end wrench to hold the nut on one side steady and
tighten the nut on the opposite side with a 15 mm socket
and wrench.
5. Carefully turn the crank arms and check the movement
of the drive belt. The Crank Arms and Flywheel should move
as one.
!
turn the Drive Pulley.
Adjust the belt tension again if necessary.
Figure 1
Figure 2
15
M
M
A