Precor C576i Service Manual page 17

4. The belt gauge should read approximately 160 lbs. If the belt tension is significantly high or
low the belt tension may be adjusted using the adjustment bolts shown in Diagram 5.2. To
adjust the belt tension first straighten the locking tabs on both bolts. When adjusting the
tension, turn both bolts equal amounts. When the adjustment is complete the step up pulley
shaft must remain perpendicular to the frame and drive belt. Turning the adjustment bolts
clockwise will increase belt tension, turning the adjustment bolts counter-clockwise will
decrease belt tension.
5. Changing the tension of the input drive belt will also affect the tension of the generator belt.
If the input belt tension has been changed, continue with step 7.
6. Place a 20030-108 or equivalent belt gauge on the generator belt as shown in Diagram 5.3.
Diagram 5.3 - Generator Belt Tension Measurement
7. The belt gauge should approximately 110 lbs. If the generator belt tension is significantly
high or low, it may be adjusted using the adjustment bolt shown in Diagram 5.3. First loosen,
but do not remove the four generator mounting nuts. Thread the adjustment bolt into or out
of the generator to change the belt tension. When the tension is correct, tighten the locking
nut. Tighten and torque the four generator mounting nuts to 200 inch pounds.
8. If either the input pulley belt or the generator belt is being replaced with a new belt, the belt
tension should be set 20 lbs. higher than the previous readings. Therefore a new input
pulley belt should be tensioned to 180 lbs. and a new generator belt should be tensioned to
130 lbs. Over time and use the belts will "relax" and the tensions will be as stated in steps 4
and 7.
9. Reconnect the red battery lead to terminal M6 of the lower PCA.
Generator Adjustment Bolt
C576i Self Powered Elliptical Fitness Crosstrainer
Generator Mounting Nut
Page 17