page 39
Adjusting the Tension of the Belt
Proper belt tension is important for a smooth, steady run. If your physical
condition permits, test the belt tension by jogging at 6 mph. If the belt tension is
too loose, you will feel a pause in the belt with each footplant (step).
To adjust the running belt tension, take the following steps:
1. Make sure that the treadmill is OFF. If the treadmill is ON, switch it to OFF.
Wait for the running belt to come to a complete stop.
2. Standing behind the treadmill use the rear belt adjustment bolts (refer to
Diagram 15 on the previous page). Simply turn each bolt

clockwise

1/4 turn
to adjust the tension of the belt.
3. Turn ON the treadmill, answer the start-up prompts, then increase the
speed of the running belt to 6 miles per hour by pressing the
SPEED key.
4. Jog on the running belt for 1 minute or more. If you feel a pause in the belt
with each footplant (step), you need to continue to adjust the belt tension.
5. Press STOP to stop the running belt.
6. Continue with steps 1 through 5 until the belt tension has been properly
adjusted and you no longer feel the pause in the belt with each footplant.
Important: Do not turn the adjusting bolts more than 1/4 turn at a time.
Overtightening the bolts can damage or cause premature failure of the
precision bearings in the front and rear rollers.
Obtaining Service
Do not attempt to service the M9.20 or M9.20s Low Impact Treadmills yourself
except for minor belt adjustments and maintenance as described in this
manual. The M9.20 and M9.20s treadmills do not contain any user-serviceable
parts.
For information about product operation or service, contact an authorized
Precor dealer or a Precor Factory Authorized Service Company. To locate the
dealer or servicer nearest you, call 1-800-4-PRECOR.
To help the customer service representative expedite your call, have your serial
number available.
The serial number on the M9.20 or M9.20s treadmill is written on a label
located underneath the treadmill at the left, rear corner of the running bed
frame. If you haven't already written the serial number in the space provided
below during the assembly process, you will need to get on your knees and
bend down to see it.
Model number: ___________ Serial number: _________________________
If you have any questions regarding the treadmill, use the model and serial
numbers whenever you call your Precor dealer or servicer.