How To Tighten Treadmill Belt

If the treadmill’s running belt does not fit properly, the proper functioning of the treadmill will be disturbed and maybe louder than usual. 

That is why belt tension adjustment is an important factor in order to proper running . 

Adjusting the treadmill belt tension is very important for runners to ensure for better running .


Product Name

Speed (Max.)

Weight Capacity



11 MPH

325 lbs

84″ x 35.5″ x 58″

10 MPH

300 lbs

73"  x 36"  x 54"

12 MPH

386 lbs

84″ x 35.5″ x 58″

12 MPH

350 LBS

72.5"x 35.25" x 57.75" 

12 MPH

300 LB

 35"× 27.6"× 54.7"

How To Tighten Treadmill Belt?

The adjustment must be made to the right and left of the rear roller using the Allen key attached to the treadmill. 

The adjustment screws are located on the back of the side rails. 

The adjustment screws are located inside the hole of each end cap.

Tighten the rear roller only to the extent that the belt does not slide on the front roller.

 Gently adjust both screws (right and left) clockwise and check for proper belt tension.

Do not overtighten the belt as it may damage the treadmill belt, and the bearings will wear too quickly.

 If the belt still slips, repeat the above step. 

After each adjustment of the running belt tension, center it according to the following instructions.

When and how do you adjust the walking belt position?

Correct centering and proper tension of the electric treadmill belt are the quieter and smoother operation of the device and the slower wear of the belt, engine, and other mechanical components of such equipment. 

What is worth emphasizing, adequately centered and tight have a significantly longer lifetime than belts for which this type of maintenance has been forgotten. 

Of course, the belt life is affected not only by its correct setting but also by systematic lubrication and intensity of use.

 It is natural for belts to wear down and, from time to time gradually, you have to replace them with new ones. 

The service life of the new treadmill belt can, however, be significantly extended. Just remember to maintain it properly.

When do you need to adjust the walking belt position?

If you notice that the treadmill belt is edging or has shifted to one side with the naked eye during operation, then there is no doubt that it must be centered.

 In most situations, however, the walking belt movement is difficult to notice at low speeds.

 Only when we turn the treadmill to a higher speed will we begin to notice a clear shift of the belt in one direction. 

The wrong setting of the belt can also be indicated by a sound of belt friction against the edge of the treadmill or audible beating. 

Once we see that the treadmill belt, specifically its setting requires some adjustment.

 We can adjust ourselves or use the help of a service/company specializing in treadmill maintenance.

How do you adjust the walking belt position?

In most devices available on the market, the treadmill belts are very easy to stretch and center. 

Just reach the adjustment screws which are usually hidden under the device housing. 

The screw on the belt offset side is slightly turned clockwise, and then screw on the opposite side of the machine is turned in the same way only in the opposite direction. 

After making the corrections, we turn on the device and observe whether the position of the treadmill belt has been centered. 

If the belt is still displaced, we try to tighten the screws a little harder.

How do you adjust the treadmill belt?

The correct positioning of the belt in the treadmill is extremely important. As a result, the treadmill runs smoothly, and the belt itself wears slowly. 

That is why it is so important to check the belt adjustment regularly and adjust it if necessary. 

It is important to know exactly when and how to do it.

When should you adjust the treadmill belt?

The time at which you should adjust the walking belts can be seen with the naked eye. 

It is a situation in which you can see that the belt will move to one side. This means that the belt must be re-centered. 

However, you should know that  this problem with the naked eye. The treadmill should work at a high speed. 

At low revs, it can happen that the belt shift will not be noticeable. Therefore, to check if the belt is set correctly.

 It is worth setting the treadmill to high speed and check if the belt moves to one side or the other during its operation.

An incorrect and audible sound of the belt rubbing against the edge of the treadmill may also indicate the belt’s wrong orientation.

 If it comes to a situation where you need to adjust the belt, then you can do it yourself.

 However, you need to know exactly how to adjust the treadmill belts properly.

Adjusting the walking belt

The belt adjustment is not a complicated task with modern treadmills. Therefore, you can stretch or adjust the walking belt yourself. 

To do this, first, remove the device housing. 

Adjustment screws are located under the housing. They are located on both sides of the treadmill. On the side where the belt moves, turn the screw slightly clockwise.

 On the other side, we do the same thing with the screw turned in the other direction.

 After adjusting, turn the treadmill on and check that it is operating correctly. 

If there is still a shift, adjust again by turning the screws a little harder.

Replacing the walking belt

Sometimes  that regulation alone does not help. The belt needs to be replaced. The treadmill belts can also be replaced by yourself. 

However, the operation is no longer as simple as adjustment. Therefore, if you do not have experience in this area, it will be better to go to the site. 

The service technician will not only correctly replace the walking belt, but also adjust it properly. 

Belt replacement, however, does not occur quite often ;especially when it comes to best treadmill for home under 500

The belts are very durable and can work smoothly for several years.

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