Why my new treadmill did not work .

The first question is whether the tear is inline with the belt rotation or across it. The second question is how the particular make of treadmill you have controls belt tracking.

In general, the "right" answer to this question is to replace, rather than attempt to repair, the belt. You will need to carefully patch the back side of the belt with at least a couple of inches' overlap on all sides, carefully keeping the tear aligned as you do so, and then ensure that the material you used will not damage the deck or rollers, or stretch or start to come loose or fold over as the belt flexes and friction heat develops during running.

Many treadmills use lateral tension in the belt to keep it centered during operation (one or both rollers are gently tapered to be thinner at the ends). Any loss of lateral tension integrity will cause the belt to continue to be separated as it passes over these, perhaps widening or distorting the area of the tear or contributing to belt misalignment or 'walkoff' -- something that the usual dodge of blocking the treadmill slightly on one side won't help.

see the video and lube correctly. 2) go to my personal TIPS for motor help.3) however you must see the voltage in the plate of motor. the tolerance will be +- 10% of voltage. can be voltage continuosly or alternating voltage.God bless you

The first place to look would be the condition of the walking belt and deck. If they are worn, dry or several years old the friction between the walking belt and deck might be causing the drive motor to slow down during your workout. If the walking belt and deck have never been replaced we would recommend starting with that repair since these are parts which will need to be replaced anyway during the life of the treadmill. if you continue to experience problems following this repair, there may be a problem with a weak drive motor or in some cases a motor control board which is failing to send the appropriate amount of current to the drive motor during a workout.

Your owners manual describes how to perform an incline calibration. Here are the instructions.
Start the machine running. Press and hold the incline up button. While the numbers are changing, remove the safety key. Reinstall the safety key. The treadmill should rise to maximum incline, then lower to minimum. After completing the cycle, the treadmill should function correctly.
If not, you may have a damaged wiring harness (caused during assembly) or a defective incline sensor.
If the sensor is defective, you will need to replace the incline motor.

Go to iconservice.com click on to manual Input manufacturer : Nordic Track then model # NTL349050 and you manual await you.