Schwinn 130/510U Service Manual page 28

14. Test the Drive Belt tension to be sure that it is correct.
• Push the Drive Belt downward at the midpoint (M) between
the pulleys and measure the distance. The Drive Belt should
have only 0.25" (0.64cm) 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 24.
If the tension is too loose or too tight, adjust the position of the
Flywheel. Continue to the next step.
15. To loosen the Flywheel hardware (J), use a 15mm open end
wrench to hold the nut on one side steady and loosen the nut on
the opposite side with a 15mm socket and wrench.
16. 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 15mm open end
wrench to hold the nut on one side steady and tighten the nut
on the opposite side with a 15mm socket and wrench.
17. Carefully turn the crank arms and check the movement of the
drive belt. The Crank Arms and Flywheel should move as one.
Be sure to keep fingers clear of all pinch hazards when
!
you turn the Drive Pulley.
Adjust the belt tension again if necessary.
Figure 1
(Main Frame bracket not shown for clarity)
Figure 2
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M
M
J
A