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Craig, Technician
Category: Exercise Equipment
Satisfied Customers: 4529
Experience:  35 years troubleshooting all types of electrical equipment and appliances.
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I have a Proform 750 treadmill which often suddenly stops when

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I have a Proform 750 treadmill which often suddenly stops when I am walking. I take the key out and reenter it and it will start again and then at any time it will stop again.
Also, sometimes it will start going very fast and nearly throws me off, with the same results. Can you help me?
Speed sensor problem, pull front cover off to inspect it. It's right next to the motor pulley adn sits at a right angle to thte pulley face. Must be 1/8" away, no more. Make sure it's clean too...
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