Question about Proform 680 LT Treadmill

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How do i unfold my proform 680 lt tredmill - Proform 680 LT Treadmill

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Should be a knob on the storage latch that pulls out of the metal shaft. Make sure you support the walking deck with your other hand so it doesn't drop suddenly.

Posted on Oct 03, 2010


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Proform pf 3.6 problems

My tredmill wont unfold - i dont know how? Help??

Feb 29, 2012 | Proform Exercise & Fitness

1 Answer

How to adjust the volume on proform 680 lt treadmill?
Please go to that web page and download your user manual free.
and then read carefully the page 18-19 in how to adjust the volume.


Oct 18, 2011 | Proform 680 LT Treadmill

1 Answer

The belt on my proform 680LT has an excessive amount of rubber powder rubbing/shedding off. It makes a mess.

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

May 03, 2011 | Proform 680 LT Treadmill

1 Answer

I need to calibrate the speed of my ProForm 680 LT.

Remove the front motor cover. Inside is a copy of the tech sheet. The procedure is outlined there.
These machines do not do an electronic calibration, it is a mechanical one. You must adjust the motor controller for max speed by following the procedure outlined.
If the speed readings are incorrect, you may be set for Kilometers rather than Miles. It's easy to determine. 3MPH=4.8KM...
Follow the procedure in your owners manual to change from metric to miles..

Dec 12, 2010 | Proform 680 LT Treadmill

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Loss key how to make it work with out key

Its just a magnet.

If you need further help, I’m available over the phone at

Nov 09, 2010 | Proform 680 LT Treadmill

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I have a pro-form 680 LT less than a year old. The belt seems loose, it catches as I run and I about fall over.

The walk belt should be tight (about 1.5" to 2 " when lifted at the edge), if not tighten screws at the rear. If the belt is tight enough then pull the front cover off and check the front roller. Sometimes the plastic drive pully slips on the front roller. If it only stops while you are running and is fine when you walk, i would go to the front roller.

If you need further help, I’m available over the phone at

Nov 02, 2010 | Proform 680 LT Treadmill

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