T3 treadmill belt starting to tear on the seam where it is joined. duct tape doesn't seem to work even though it's on the edge where my foot doesn't strike. if it needs to be replaced, who can I call to do that?

There is no straight stitch plate listed in the manual. Straight stitch selections list presser foot J. You might try increasing top thread tension.

In similar project type I've used masking tape over the top of the plate with success. Start by remove and reinserting bobbin so bobbin thread is out of the way. Put a long narrow strip of masking tape over center of needle plate (front to back). Take care not to interfere with feed dogs (why narrow tape is necessary). Then rotate hand wheel... needle penetrates tape and brings bobbin thread up through tape.

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.

Edge Stitching Foot? Or 1/4" guide foot? Piecing foot?

1 4 Edge Stitch Foot
or
http://www.husqvarnaviking.com/accessories#1814

In actuality, almost any flat presser foot will work that is wide without any ability to roll edges, pintuck, etc. You can attain the 1/4" seam by measuring exactly 1/4" from the needle and mark with a strip of painter's tape, or some other movable material. Then just use that painter's tape as your 1/4" guide. Somewhere I saw someone recommended using 1/4" inch graph paper as a guide--set the needle on a line and use the 1/4" line for the fabric guide.

Your best option will be a "walking" or "even feed" foot. Your Brother dealer should have them in stock.

Hi,
error 3 means the waking belt starts moving without any command. Make sure that you are not moving the belt manually before the treadmill stars .
for more details check the link
electronics repair help LIFE FITNESS T3 T3i T5 T5i T7i TREADMILL ERROR...

Unfortunately, in reality, most 1/4" presser feet do not guarantee a perfect scant 1/4". There are multiple ideas for achieving a more accurate scant 1/4" seam.

This is the method I use. Use a quilting ruler and place it under the presser foot and then gently rotate the handwheel until the needle point rests exactly a scant 1/4" from the ruler edge. Then place a strip of painter's tape on the sewing surface adjacent to the edge of the ruler. Then use the painter's tape as your fabric guide.

Scant 1 4 seam allowance

How to sew scant 1 4 inch seam Kreations by Julz

What Is Scant

will be a great Idea to contact www.weslo.com go weslo customer service or send email to [email protected]
Since they are the manufacturer , they will have specific Tip for the seam,
God bless you

Discription: WALKING BELT W/FASTENERS, Part # 193575, Model # PCTL49820, Price $48.83
In humble opinion you should replace the part, it sounds like an accident waiting to happen Call Icon Fitness @ 800-999-3756 and give them the info above.

This is the seam width?

Some machines can use a universal 1/4" presser foot.

If the needle can be positioned to the right, you may be able to use a regular presser foot.

A seam guide can be fabricated by using a sticky note pad or layers of painter's blue tape to act as a "wall" to help keep the raw edge of the seam feeding evenly. Measure 1/4" to the right from the needle and position the note pad or tape accordingly.

Be extremely careful when trying to trim a belt. Understand that many hazards exist when performing these steps that can result in serious injury. If you have any question whether you can perform these steps or not, please call a professional and do NOT attempt this repair.
There are two methods that can be used to trim a walking belt when it has developed a tattered edge:
1) Remove the belt from the treadmill for trimming.
a) All walking belts are cut at some point during their life, whether in manufacturing or later during service, so this will not compromise the integrity of the belt as long as you cut a straight line and do not leave a rough edge.
b) Remove the walking belt from the treadmill, lay the belt flat and even on the ground, and measure and equal distance on each end of the belt and mark the belt for cutting on each end of the belt. Cut no more than necessary to restore a smooth edge.
c) Use a piece of flat steel or other metal object that is straight and long enough and connect the two markings on the belt with the metal object.
d) Using a new razor knife, box knife, or similar instrument, cut the belt along the steel object. If the knife has a new edge, you should cut through the belt in one or two passes of the knife.
e) Check the belt for a smooth edge and reinstall the belt.

2) Cut the belt while it is mounted on the treadmill. This method should only be considered by those who are familiar with treadmills and very good with tools. This can be a dangerous process.
a) Track or center the belt off center to the opposite side of the tattered edge (i.e.- if the belt is tattered on the right side, track the belt off centered to the left side by about 1/2 to 3/4").
b) Operate the treadmill at a very slow speed. Usually 1.0 or 1.5 MPH will be sufficient.
c) Using both hands, line a new razor knife up on the tattered side of the belt. Make sure to cut no more than necessary to make a smooth edge.
d) With the belt moving and using both hands, lift the knife up and contact the belt making sure to hold the knife steady and keeping your hands and clothing as free from the moving roller as possible. You will not damage the roller to the point where it will hurt the operation of the treadmill.
e) Do not lower the knife until you see the belt separate from the tattered edge. Once this happens, turn the treadmill off, unplug the treadmill, and cut the tattered strip off the treadmill.
f) Track or center the belt and operate normally.