Proform treadmill belt won't stay centered. travels to left and rubs against side

proceed according. God bless you

Is it rubbing off the sides of the belt? If so, adjust the lateral movement of the belt with the hex bolts at the base of the treadmill. If not, you may need a new belt. See Treadmill Parts

hi you need to tighten the left side a turn or two and loosen the right side one or two. this is while the tread is on 3-4.once it moves over to where you want it. tighten the rite side . PS to tighten or loosen the bolts to the w/belt. clockwize is tight, and counter is loose

They are only adjusted left to right so they run centrally.

https://www.google.com/search?q=adjust+treadmill+belt

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The belt does not need to be replaced more than likely. The problem is probably because that adjustment bolt is stripped out causing it loosen and keeping it over on that side. ProForm sells star washers that help them stay steady and not slip out. I would call them and ask for a couple of star washers and a new adjustment bolt for that left side.

If the walking belt is off-center, first remove the key and UNPLUG THE POWER CORD. If the walking belt has shifted to the left, use the allen wrench to turn the left rear roller bolt clockwise 1/2 of a turn; if the walking belt has shifted to the right, turn the bolt counterclockwise 1/2 of a turn. Be careful not to overtighten the walking belt. Plug in the power cord, insert the key and run the treadmill for a few minutes. Repeat until the walking belt is centered.

If the walking belt is off-center, first remove the key and UNPLUG THE POWER CORD. If the walking belt has shifted to the left, use the hex key to turn the left idler roller bolt clockwise 1/2 of a turn; if the walking belt has shifted to the right, turn the left idler roller bolt counterclockwise 1/2 of a turn. Be careful not to overtighten the walking belt. Then, plug in the power cord, insert the key, and run the treadmill for a few minutes.

there should be adjustment screws on the rear roller.
only adjust one of them (usually the left) if the belt rubs on the left turn the screw clockwise 1/4 turn and if the belt rubs on the right turn counterclockwise. Make small adjustments until the belt stays in the center

PROBLEM: The walking belt is off-center or slips when walked on SOLUTION: a. If the walking belt has shifted to the left, first remove the key and UNPLUG THE POWER CORD. Using the hex key, turn the left idler roller bolt clockwise 1/2 of a turn. Be careful not to overtighten the walking belt. If the walking belt has shifted to the right, turn the left idler roller bolt counterclockwise 1/2 of a turn. Then, plug in the power cord, insert the key, and run the treadmill for a few minutes. Repeat until the walking belt is centered.

Most treads have two bolts on the rear roller. To tighten turns these bolts clockwise. Depending on how bad the problem is, I usually turn a 1/4 turn at a time. Walk on the machine to check tension. Once tension is correct turn right side bolt or left side bolt to center belt. Remember belt will travel to side with least resistance. ie.. if you want the belt to go to the left- tighten the right side(clockwise) Centering the belt is easier with machine running at about 2-2.5 if belt is not rubbing on the sides.